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Finding the Fourth Proportional to 91,898.60, 137,829.50 and 25,321.64

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Solution

The fourth proportional to 91,898.60, 137,829.50 and 25,321.64 is: 37,977.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,898.60 : 137,829.50 = 25,321.64 : x
  2. Step 2: Convert to fraction form
    91,898.60/137,829.50 = 25,321.64/x
  3. Step 3: Cross multiply
    91,898.60x = 137,829.50 × 25,321.64
  4. Step 4: Simplify right side
    91,898.60x = 3,490,068,980.38
  5. Step 5: Solve for x
    x = 3,490,068,980.38/91,898.60
  6. Step 6: Final answer
    x = 37,977.39

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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.