Home / 83,541.40-115,279.62-47,731.28

Finding the Fourth Proportional to 83,541.40, 115,279.62 and 47,731.28

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Solution

The fourth proportional to 83,541.40, 115,279.62 and 47,731.28 is: 65,864.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,541.40 : 115,279.62 = 47,731.28 : x
  2. Step 2: Convert to fraction form
    83,541.40/115,279.62 = 47,731.28/x
  3. Step 3: Cross multiply
    83,541.40x = 115,279.62 × 47,731.28
  4. Step 4: Simplify right side
    83,541.40x = 5,502,443,820.51
  5. Step 5: Solve for x
    x = 5,502,443,820.51/83,541.40
  6. Step 6: Final answer
    x = 65,864.87

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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.