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Finding the Fourth Proportional to 91,618.28, 137,447.02 and 28,437.02

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Solution

The fourth proportional to 91,618.28, 137,447.02 and 28,437.02 is: 42,661.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,618.28 : 137,447.02 = 28,437.02 : x
  2. Step 2: Convert to fraction form
    91,618.28/137,447.02 = 28,437.02/x
  3. Step 3: Cross multiply
    91,618.28x = 137,447.02 × 28,437.02
  4. Step 4: Simplify right side
    91,618.28x = 3,908,583,656.68
  5. Step 5: Solve for x
    x = 3,908,583,656.68/91,618.28
  6. Step 6: Final answer
    x = 42,661.61

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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.