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Finding the Fourth Proportional to 86,989.52, 120,041.52 and 49,264.04

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Solution

The fourth proportional to 86,989.52, 120,041.52 and 49,264.04 is: 67,982.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,989.52 : 120,041.52 = 49,264.04 : x
  2. Step 2: Convert to fraction form
    86,989.52/120,041.52 = 49,264.04/x
  3. Step 3: Cross multiply
    86,989.52x = 120,041.52 × 49,264.04
  4. Step 4: Simplify right side
    86,989.52x = 5,913,730,242.94
  5. Step 5: Solve for x
    x = 5,913,730,242.94/86,989.52
  6. Step 6: Final answer
    x = 67,982.10

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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.