Home / 81,684.29-112,711.10-51,053.78

Finding the Fourth Proportional to 81,684.29, 112,711.10 and 51,053.78

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Solution

The fourth proportional to 81,684.29, 112,711.10 and 51,053.78 is: 70,445.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,684.29 : 112,711.10 = 51,053.78 : x
  2. Step 2: Convert to fraction form
    81,684.29/112,711.10 = 51,053.78/x
  3. Step 3: Cross multiply
    81,684.29x = 112,711.10 × 51,053.78
  4. Step 4: Simplify right side
    81,684.29x = 5,754,327,095.47
  5. Step 5: Solve for x
    x = 5,754,327,095.47/81,684.29
  6. Step 6: Final answer
    x = 70,445.94

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1.5x scale

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.