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Finding the Fourth Proportional to 91,897.60, 137,781.53 and 35,690.89

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Solution

The fourth proportional to 91,897.60, 137,781.53 and 35,690.89 is: 53,511.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,897.60 : 137,781.53 = 35,690.89 : x
  2. Step 2: Convert to fraction form
    91,897.60/137,781.53 = 35,690.89/x
  3. Step 3: Cross multiply
    91,897.60x = 137,781.53 × 35,690.89
  4. Step 4: Simplify right side
    91,897.60x = 4,917,545,431.26
  5. Step 5: Solve for x
    x = 4,917,545,431.26/91,897.60
  6. Step 6: Final answer
    x = 53,511.14

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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.