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Finding the Fourth Proportional to 66,461,390.40, 99,794,728.80 and 36,228,302.40

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Solution

The fourth proportional to 66,461,390.40, 99,794,728.80 and 36,228,302.40 is: 54,398,404.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,461,390.40 : 99,794,728.80 = 36,228,302.40 : x
  2. Step 2: Convert to fraction form
    66,461,390.40/99,794,728.80 = 36,228,302.40/x
  3. Step 3: Cross multiply
    66,461,390.40x = 99,794,728.80 × 36,228,302.40
  4. Step 4: Simplify right side
    66,461,390.40x = 3,615,393,612,892,389
  5. Step 5: Solve for x
    x = 3,615,393,612,892,389/66,461,390.40
  6. Step 6: Final answer
    x = 54,398,404.71

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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.