Home / 78,840,048.80-118,260,073.20-21,341,194.40

Finding the Fourth Proportional to 78,840,048.80, 118,260,073.20 and 21,341,194.40

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Solution

The fourth proportional to 78,840,048.80, 118,260,073.20 and 21,341,194.40 is: 32,011,791.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,840,048.80 : 118,260,073.20 = 21,341,194.40 : x
  2. Step 2: Convert to fraction form
    78,840,048.80/118,260,073.20 = 21,341,194.40/x
  3. Step 3: Cross multiply
    78,840,048.80x = 118,260,073.20 × 21,341,194.40
  4. Step 4: Simplify right side
    78,840,048.80x = 2,523,811,211,919,430
  5. Step 5: Solve for x
    x = 2,523,811,211,919,430/78,840,048.80
  6. Step 6: Final answer
    x = 32,011,791.60

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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.