Home / 90,038.72-124,257.76-54,239.92

Finding the Fourth Proportional to 90,038.72, 124,257.76 and 54,239.92

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Solution

The fourth proportional to 90,038.72, 124,257.76 and 54,239.92 is: 74,853.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,038.72 : 124,257.76 = 54,239.92 : x
  2. Step 2: Convert to fraction form
    90,038.72/124,257.76 = 54,239.92/x
  3. Step 3: Cross multiply
    90,038.72x = 124,257.76 × 54,239.92
  4. Step 4: Simplify right side
    90,038.72x = 6,739,730,961.78
  5. Step 5: Solve for x
    x = 6,739,730,961.78/90,038.72
  6. Step 6: Final answer
    x = 74,853.70

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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.