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Finding the Fourth Proportional to 91,583.16, 137,394.47 and 28,402.01

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Solution

The fourth proportional to 91,583.16, 137,394.47 and 28,402.01 is: 42,609.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,583.16 : 137,394.47 = 28,402.01 : x
  2. Step 2: Convert to fraction form
    91,583.16/137,394.47 = 28,402.01/x
  3. Step 3: Cross multiply
    91,583.16x = 137,394.47 × 28,402.01
  4. Step 4: Simplify right side
    91,583.16x = 3,902,278,281.90
  5. Step 5: Solve for x
    x = 3,902,278,281.90/91,583.16
  6. Step 6: Final answer
    x = 42,609.12

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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.