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Finding the Fourth Proportional to 66,443,358.80, 99,665,038.20 and 65,323,614.80

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Solution

The fourth proportional to 66,443,358.80, 99,665,038.20 and 65,323,614.80 is: 97,985,422.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443,358.80 : 99,665,038.20 = 65,323,614.80 : x
  2. Step 2: Convert to fraction form
    66,443,358.80/99,665,038.20 = 65,323,614.80/x
  3. Step 3: Cross multiply
    66,443,358.80x = 99,665,038.20 × 65,323,614.80
  4. Step 4: Simplify right side
    66,443,358.80x = 6,510,480,564,404,085
  5. Step 5: Solve for x
    x = 6,510,480,564,404,085/66,443,358.80
  6. Step 6: Final answer
    x = 97,985,422.20

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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.