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Finding the Fourth Proportional to 101,636.31, 152,426.93 and 42,459.60

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Solution

The fourth proportional to 101,636.31, 152,426.93 and 42,459.60 is: 63,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,636.31 : 152,426.93 = 42,459.60 : x
  2. Step 2: Convert to fraction form
    101,636.31/152,426.93 = 42,459.60/x
  3. Step 3: Cross multiply
    101,636.31x = 152,426.93 × 42,459.60
  4. Step 4: Simplify right side
    101,636.31x = 6,471,986,264.73
  5. Step 5: Solve for x
    x = 6,471,986,264.73/101,636.31
  6. Step 6: Final answer
    x = 63,677.89

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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.