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Finding the Fourth Proportional to 91,618.60, 137,447.52 and 28,437.40

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Solution

The fourth proportional to 91,618.60, 137,447.52 and 28,437.40 is: 42,662.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,618.60 : 137,447.52 = 28,437.40 : x
  2. Step 2: Convert to fraction form
    91,618.60/137,447.52 = 28,437.40/x
  3. Step 3: Cross multiply
    91,618.60x = 137,447.52 × 28,437.40
  4. Step 4: Simplify right side
    91,618.60x = 3,908,650,105.25
  5. Step 5: Solve for x
    x = 3,908,650,105.25/91,618.60
  6. Step 6: Final answer
    x = 42,662.19

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1.5x scale

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.