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Finding the Fourth Proportional to 83,275.68, 124,913.40 and 20,946.16

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Solution

The fourth proportional to 83,275.68, 124,913.40 and 20,946.16 is: 31,419.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,275.68 : 124,913.40 = 20,946.16 : x
  2. Step 2: Convert to fraction form
    83,275.68/124,913.40 = 20,946.16/x
  3. Step 3: Cross multiply
    83,275.68x = 124,913.40 × 20,946.16
  4. Step 4: Simplify right side
    83,275.68x = 2,616,456,062.54
  5. Step 5: Solve for x
    x = 2,616,456,062.54/83,275.68
  6. Step 6: Final answer
    x = 31,419.21

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1.5x scale

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.