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Finding the Fourth Proportional to 86,005.53, 118,689.71 and 48,283.29

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Solution

The fourth proportional to 86,005.53, 118,689.71 and 48,283.29 is: 66,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,005.53 : 118,689.71 = 48,283.29 : x
  2. Step 2: Convert to fraction form
    86,005.53/118,689.71 = 48,283.29/x
  3. Step 3: Cross multiply
    86,005.53x = 118,689.71 × 48,283.29
  4. Step 4: Simplify right side
    86,005.53x = 5,730,729,446.53
  5. Step 5: Solve for x
    x = 5,730,729,446.53/86,005.53
  6. Step 6: Final answer
    x = 66,632.10

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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.