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Finding the Fourth Proportional to 91,263.30, 136,561.90 and 53,841.30

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Solution

The fourth proportional to 91,263.30, 136,561.90 and 53,841.30 is: 80,565.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,263.30 : 136,561.90 = 53,841.30 : x
  2. Step 2: Convert to fraction form
    91,263.30/136,561.90 = 53,841.30/x
  3. Step 3: Cross multiply
    91,263.30x = 136,561.90 × 53,841.30
  4. Step 4: Simplify right side
    91,263.30x = 7,352,669,680.71
  5. Step 5: Solve for x
    x = 7,352,669,680.71/91,263.30
  6. Step 6: Final answer
    x = 80,565.46

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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.