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Finding the Fourth Proportional to 61,087.68, 91,646.64 and 19,534.68

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Solution

The fourth proportional to 61,087.68, 91,646.64 and 19,534.68 is: 29,306.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,087.68 : 91,646.64 = 19,534.68 : x
  2. Step 2: Convert to fraction form
    61,087.68/91,646.64 = 19,534.68/x
  3. Step 3: Cross multiply
    61,087.68x = 91,646.64 × 19,534.68
  4. Step 4: Simplify right side
    61,087.68x = 1,790,287,785.48
  5. Step 5: Solve for x
    x = 1,790,287,785.48/61,087.68
  6. Step 6: Final answer
    x = 29,306.86

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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.