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Finding the Fourth Proportional to 66,508,402.40, 99,762,603.60 and 43,665,624.80

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Solution

The fourth proportional to 66,508,402.40, 99,762,603.60 and 43,665,624.80 is: 65,498,437.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,508,402.40 : 99,762,603.60 = 43,665,624.80 : x
  2. Step 2: Convert to fraction form
    66,508,402.40/99,762,603.60 = 43,665,624.80/x
  3. Step 3: Cross multiply
    66,508,402.40x = 99,762,603.60 × 43,665,624.80
  4. Step 4: Simplify right side
    66,508,402.40x = 4,356,196,417,868,728.50
  5. Step 5: Solve for x
    x = 4,356,196,417,868,728.50/66,508,402.40
  6. Step 6: Final answer
    x = 65,498,437.20

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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.