Home / 90,423-124,785.24-50,138.46

Finding the Fourth Proportional to 90,423, 124,785.24 and 50,138.46

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Solution

The fourth proportional to 90,423, 124,785.24 and 50,138.46 is: 69,191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,423 : 124,785.24 = 50,138.46 : x
  2. Step 2: Convert to fraction form
    90,423/124,785.24 = 50,138.46/x
  3. Step 3: Cross multiply
    90,423x = 124,785.24 × 50,138.46
  4. Step 4: Simplify right side
    90,423x = 6,256,539,764.33
  5. Step 5: Solve for x
    x = 6,256,539,764.33/90,423
  6. Step 6: Final answer
    x = 69,191.91

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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.