Home / 83,386.16-125,079.86-21,056.68

Finding the Fourth Proportional to 83,386.16, 125,079.86 and 21,056.68

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Solution

The fourth proportional to 83,386.16, 125,079.86 and 21,056.68 is: 31,585.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,386.16 : 125,079.86 = 21,056.68 : x
  2. Step 2: Convert to fraction form
    83,386.16/125,079.86 = 21,056.68/x
  3. Step 3: Cross multiply
    83,386.16x = 125,079.86 × 21,056.68
  4. Step 4: Simplify right side
    83,386.16x = 2,633,766,586.46
  5. Step 5: Solve for x
    x = 2,633,766,586.46/83,386.16
  6. Step 6: Final answer
    x = 31,585.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.