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Finding the Fourth Proportional to 79,478,266.80, 119,217,400.20 and 74,691,361.20

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Solution

The fourth proportional to 79,478,266.80, 119,217,400.20 and 74,691,361.20 is: 112,037,041.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,478,266.80 : 119,217,400.20 = 74,691,361.20 : x
  2. Step 2: Convert to fraction form
    79,478,266.80/119,217,400.20 = 74,691,361.20/x
  3. Step 3: Cross multiply
    79,478,266.80x = 119,217,400.20 × 74,691,361.20
  4. Step 4: Simplify right side
    79,478,266.80x = 8,904,509,899,663,153
  5. Step 5: Solve for x
    x = 8,904,509,899,663,153/79,478,266.80
  6. Step 6: Final answer
    x = 112,037,041.80

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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.