Home / 68,535,331.28-102,792,884.78-20,000,153.36

Finding the Fourth Proportional to 68,535,331.28, 102,792,884.78 and 20,000,153.36

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Solution

The fourth proportional to 68,535,331.28, 102,792,884.78 and 20,000,153.36 is: 29,997,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,535,331.28 : 102,792,884.78 = 20,000,153.36 : x
  2. Step 2: Convert to fraction form
    68,535,331.28/102,792,884.78 = 20,000,153.36/x
  3. Step 3: Cross multiply
    68,535,331.28x = 102,792,884.78 × 20,000,153.36
  4. Step 4: Simplify right side
    68,535,331.28x = 2,055,873,459,532,981.50
  5. Step 5: Solve for x
    x = 2,055,873,459,532,981.50/68,535,331.28
  6. Step 6: Final answer
    x = 29,997,279.08

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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.