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Finding the Fourth Proportional to 91,577, 137,349.30 and 41,645.40

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Solution

The fourth proportional to 91,577, 137,349.30 and 41,645.40 is: 62,460.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,577 : 137,349.30 = 41,645.40 : x
  2. Step 2: Convert to fraction form
    91,577/137,349.30 = 41,645.40/x
  3. Step 3: Cross multiply
    91,577x = 137,349.30 × 41,645.40
  4. Step 4: Simplify right side
    91,577x = 5,719,966,538.22
  5. Step 5: Solve for x
    x = 5,719,966,538.22/91,577
  6. Step 6: Final answer
    x = 62,460.73

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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.