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Finding the Fourth Proportional to 83,123.60, 124,600.35 and 40,938.80

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Solution

The fourth proportional to 83,123.60, 124,600.35 and 40,938.80 is: 61,366.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,123.60 : 124,600.35 = 40,938.80 : x
  2. Step 2: Convert to fraction form
    83,123.60/124,600.35 = 40,938.80/x
  3. Step 3: Cross multiply
    83,123.60x = 124,600.35 × 40,938.80
  4. Step 4: Simplify right side
    83,123.60x = 5,100,988,808.58
  5. Step 5: Solve for x
    x = 5,100,988,808.58/83,123.60
  6. Step 6: Final answer
    x = 61,366.31

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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.