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Finding the Fourth Proportional to 66,852,007.70, 100,278,011.55 and 57,604,934.30

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Solution

The fourth proportional to 66,852,007.70, 100,278,011.55 and 57,604,934.30 is: 86,407,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,852,007.70 : 100,278,011.55 = 57,604,934.30 : x
  2. Step 2: Convert to fraction form
    66,852,007.70/100,278,011.55 = 57,604,934.30/x
  3. Step 3: Cross multiply
    66,852,007.70x = 100,278,011.55 × 57,604,934.30
  4. Step 4: Simplify right side
    66,852,007.70x = 5,776,508,267,072,391
  5. Step 5: Solve for x
    x = 5,776,508,267,072,391/66,852,007.70
  6. Step 6: Final answer
    x = 86,407,401.45

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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.