Home / 77,989.07-107,624.92-42,179.08

Finding the Fourth Proportional to 77,989.07, 107,624.92 and 42,179.08

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Solution

The fourth proportional to 77,989.07, 107,624.92 and 42,179.08 is: 58,207.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,989.07 : 107,624.92 = 42,179.08 : x
  2. Step 2: Convert to fraction form
    77,989.07/107,624.92 = 42,179.08/x
  3. Step 3: Cross multiply
    77,989.07x = 107,624.92 × 42,179.08
  4. Step 4: Simplify right side
    77,989.07x = 4,539,520,471.09
  5. Step 5: Solve for x
    x = 4,539,520,471.09/77,989.07
  6. Step 6: Final answer
    x = 58,207.13

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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.