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Finding the Fourth Proportional to 66,734,663.40, 100,101,995.10 and 28,397,428.20

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Solution

The fourth proportional to 66,734,663.40, 100,101,995.10 and 28,397,428.20 is: 42,596,142.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,734,663.40 : 100,101,995.10 = 28,397,428.20 : x
  2. Step 2: Convert to fraction form
    66,734,663.40/100,101,995.10 = 28,397,428.20/x
  3. Step 3: Cross multiply
    66,734,663.40x = 100,101,995.10 × 28,397,428.20
  4. Step 4: Simplify right side
    66,734,663.40x = 2,842,639,218,529,001.50
  5. Step 5: Solve for x
    x = 2,842,639,218,529,001.50/66,734,663.40
  6. Step 6: Final answer
    x = 42,596,142.30

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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.