Home / 79,291,332,307.80-118,936,998,461.70-72,679,355,962.20

Finding the Fourth Proportional to 79,291,332,307.80, 118,936,998,461.70 and 72,679,355,962.20

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Solution

The fourth proportional to 79,291,332,307.80, 118,936,998,461.70 and 72,679,355,962.20 is: 109,019,033,943.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,291,332,307.80 : 118,936,998,461.70 = 72,679,355,962.20 : x
  2. Step 2: Convert to fraction form
    79,291,332,307.80/118,936,998,461.70 = 72,679,355,962.20/x
  3. Step 3: Cross multiply
    79,291,332,307.80x = 118,936,998,461.70 × 72,679,355,962.20
  4. Step 4: Simplify right side
    79,291,332,307.80x = 8,644,264,448,273,527,341,056
  5. Step 5: Solve for x
    x = 8,644,264,448,273,527,341,056/79,291,332,307.80
  6. Step 6: Final answer
    x = 109,019,033,943.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.