Home / 78,451.12-108,262.74-42,641.07

Finding the Fourth Proportional to 78,451.12, 108,262.74 and 42,641.07

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Solution

The fourth proportional to 78,451.12, 108,262.74 and 42,641.07 is: 58,844.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,451.12 : 108,262.74 = 42,641.07 : x
  2. Step 2: Convert to fraction form
    78,451.12/108,262.74 = 42,641.07/x
  3. Step 3: Cross multiply
    78,451.12x = 108,262.74 × 42,641.07
  4. Step 4: Simplify right side
    78,451.12x = 4,616,439,074.73
  5. Step 5: Solve for x
    x = 4,616,439,074.73/78,451.12
  6. Step 6: Final answer
    x = 58,844.78

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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.