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Finding the Fourth Proportional to 101,605.64, 140,284.24 and 63,423.32

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Solution

The fourth proportional to 101,605.64, 140,284.24 and 63,423.32 is: 87,566.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,605.64 : 140,284.24 = 63,423.32 : x
  2. Step 2: Convert to fraction form
    101,605.64/140,284.24 = 63,423.32/x
  3. Step 3: Cross multiply
    101,605.64x = 140,284.24 × 63,423.32
  4. Step 4: Simplify right side
    101,605.64x = 8,897,291,701.61
  5. Step 5: Solve for x
    x = 8,897,291,701.61/101,605.64
  6. Step 6: Final answer
    x = 87,566.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.