Home / 78,760,037.80-118,140,056.70-67,989,500.20

Finding the Fourth Proportional to 78,760,037.80, 118,140,056.70 and 67,989,500.20

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Solution

The fourth proportional to 78,760,037.80, 118,140,056.70 and 67,989,500.20 is: 101,984,250.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,760,037.80 : 118,140,056.70 = 67,989,500.20 : x
  2. Step 2: Convert to fraction form
    78,760,037.80/118,140,056.70 = 67,989,500.20/x
  3. Step 3: Cross multiply
    78,760,037.80x = 118,140,056.70 × 67,989,500.20
  4. Step 4: Simplify right side
    78,760,037.80x = 8,032,283,408,632,662
  5. Step 5: Solve for x
    x = 8,032,283,408,632,662/78,760,037.80
  6. Step 6: Final answer
    x = 101,984,250.30

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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.