Home / 81,543.62-112,531.40-47,551.16

Finding the Fourth Proportional to 81,543.62, 112,531.40 and 47,551.16

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Solution

The fourth proportional to 81,543.62, 112,531.40 and 47,551.16 is: 65,621.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,543.62 : 112,531.40 = 47,551.16 : x
  2. Step 2: Convert to fraction form
    81,543.62/112,531.40 = 47,551.16/x
  3. Step 3: Cross multiply
    81,543.62x = 112,531.40 × 47,551.16
  4. Step 4: Simplify right side
    81,543.62x = 5,350,997,806.01
  5. Step 5: Solve for x
    x = 5,350,997,806.01/81,543.62
  6. Step 6: Final answer
    x = 65,621.30

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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.