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Finding the Fourth Proportional to 86,641.95, 119,561.61 and 48,393.88

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Solution

The fourth proportional to 86,641.95, 119,561.61 and 48,393.88 is: 66,781.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,641.95 : 119,561.61 = 48,393.88 : x
  2. Step 2: Convert to fraction form
    86,641.95/119,561.61 = 48,393.88/x
  3. Step 3: Cross multiply
    86,641.95x = 119,561.61 × 48,393.88
  4. Step 4: Simplify right side
    86,641.95x = 5,786,050,206.95
  5. Step 5: Solve for x
    x = 5,786,050,206.95/86,641.95
  6. Step 6: Final answer
    x = 66,781.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.