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Finding the Fourth Proportional to 86,034.95, 118,747.19 and 47,807.61

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Solution

The fourth proportional to 86,034.95, 118,747.19 and 47,807.61 is: 65,985.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,034.95 : 118,747.19 = 47,807.61 : x
  2. Step 2: Convert to fraction form
    86,034.95/118,747.19 = 47,807.61/x
  3. Step 3: Cross multiply
    86,034.95x = 118,747.19 × 47,807.61
  4. Step 4: Simplify right side
    86,034.95x = 5,677,019,348.12
  5. Step 5: Solve for x
    x = 5,677,019,348.12/86,034.95
  6. Step 6: Final answer
    x = 65,985.04

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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.