Home / 83,411.10-125,116.65-21,081.60

Finding the Fourth Proportional to 83,411.10, 125,116.65 and 21,081.60

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Solution

The fourth proportional to 83,411.10, 125,116.65 and 21,081.60 is: 31,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,411.10 : 125,116.65 = 21,081.60 : x
  2. Step 2: Convert to fraction form
    83,411.10/125,116.65 = 21,081.60/x
  3. Step 3: Cross multiply
    83,411.10x = 125,116.65 × 21,081.60
  4. Step 4: Simplify right side
    83,411.10x = 2,637,659,168.64
  5. Step 5: Solve for x
    x = 2,637,659,168.64/83,411.10
  6. Step 6: Final answer
    x = 31,622.40

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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.