Home / 83,123.40-124,696.02-30,569.78

Finding the Fourth Proportional to 83,123.40, 124,696.02 and 30,569.78

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Solution

The fourth proportional to 83,123.40, 124,696.02 and 30,569.78 is: 45,858.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,123.40 : 124,696.02 = 30,569.78 : x
  2. Step 2: Convert to fraction form
    83,123.40/124,696.02 = 30,569.78/x
  3. Step 3: Cross multiply
    83,123.40x = 124,696.02 × 30,569.78
  4. Step 4: Simplify right side
    83,123.40x = 3,811,929,898.28
  5. Step 5: Solve for x
    x = 3,811,929,898.28/83,123.40
  6. Step 6: Final answer
    x = 45,858.69

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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.