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Finding the Fourth Proportional to 66,455.70, 99,737.95 and 65,937.30

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Solution

The fourth proportional to 66,455.70, 99,737.95 and 65,937.30 is: 98,959.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,455.70 : 99,737.95 = 65,937.30 : x
  2. Step 2: Convert to fraction form
    66,455.70/99,737.95 = 65,937.30/x
  3. Step 3: Cross multiply
    66,455.70x = 99,737.95 × 65,937.30
  4. Step 4: Simplify right side
    66,455.70x = 6,576,451,130.54
  5. Step 5: Solve for x
    x = 6,576,451,130.54/66,455.70
  6. Step 6: Final answer
    x = 98,959.93

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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.