Home / 90,108.60-124,340.36-49,815.86

Finding the Fourth Proportional to 90,108.60, 124,340.36 and 49,815.86

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Solution

The fourth proportional to 90,108.60, 124,340.36 and 49,815.86 is: 68,740.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,108.60 : 124,340.36 = 49,815.86 : x
  2. Step 2: Convert to fraction form
    90,108.60/124,340.36 = 49,815.86/x
  3. Step 3: Cross multiply
    90,108.60x = 124,340.36 × 49,815.86
  4. Step 4: Simplify right side
    90,108.60x = 6,194,121,095.33
  5. Step 5: Solve for x
    x = 6,194,121,095.33/90,108.60
  6. Step 6: Final answer
    x = 68,740.62

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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.