Home / 90,505.62-124,901.19-54,688.77

Finding the Fourth Proportional to 90,505.62, 124,901.19 and 54,688.77

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Solution

The fourth proportional to 90,505.62, 124,901.19 and 54,688.77 is: 75,472.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,505.62 : 124,901.19 = 54,688.77 : x
  2. Step 2: Convert to fraction form
    90,505.62/124,901.19 = 54,688.77/x
  3. Step 3: Cross multiply
    90,505.62x = 124,901.19 × 54,688.77
  4. Step 4: Simplify right side
    90,505.62x = 6,830,692,452.64
  5. Step 5: Solve for x
    x = 6,830,692,452.64/90,505.62
  6. Step 6: Final answer
    x = 75,472.58

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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.