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Finding the Fourth Proportional to 66,407,358.60, 99,563,798.70 and 25,450,972.20

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Solution

The fourth proportional to 66,407,358.60, 99,563,798.70 and 25,450,972.20 is: 38,158,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407,358.60 : 99,563,798.70 = 25,450,972.20 : x
  2. Step 2: Convert to fraction form
    66,407,358.60/99,563,798.70 = 25,450,972.20/x
  3. Step 3: Cross multiply
    66,407,358.60x = 99,563,798.70 × 25,450,972.20
  4. Step 4: Simplify right side
    66,407,358.60x = 2,533,995,472,840,096
  5. Step 5: Solve for x
    x = 2,533,995,472,840,096/66,407,358.60
  6. Step 6: Final answer
    x = 38,158,353.63

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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.