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Finding the Fourth Proportional to 91,154.55, 136,731.25 and 49,054.47

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Solution

The fourth proportional to 91,154.55, 136,731.25 and 49,054.47 is: 73,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,154.55 : 136,731.25 = 49,054.47 : x
  2. Step 2: Convert to fraction form
    91,154.55/136,731.25 = 49,054.47/x
  3. Step 3: Cross multiply
    91,154.55x = 136,731.25 × 49,054.47
  4. Step 4: Simplify right side
    91,154.55x = 6,707,279,001.19
  5. Step 5: Solve for x
    x = 6,707,279,001.19/91,154.55
  6. Step 6: Final answer
    x = 73,581.40

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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.