Home / 90,123.75-124,368.26-49,836.15

Finding the Fourth Proportional to 90,123.75, 124,368.26 and 49,836.15

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Solution

The fourth proportional to 90,123.75, 124,368.26 and 49,836.15 is: 68,772.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,123.75 : 124,368.26 = 49,836.15 : x
  2. Step 2: Convert to fraction form
    90,123.75/124,368.26 = 49,836.15/x
  3. Step 3: Cross multiply
    90,123.75x = 124,368.26 × 49,836.15
  4. Step 4: Simplify right side
    90,123.75x = 6,198,035,011.42
  5. Step 5: Solve for x
    x = 6,198,035,011.42/90,123.75
  6. Step 6: Final answer
    x = 68,772.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.