Home / 77,877.12-107,432.96-51,008

Finding the Fourth Proportional to 77,877.12, 107,432.96 and 51,008

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Solution

The fourth proportional to 77,877.12, 107,432.96 and 51,008 is: 70,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,877.12 : 107,432.96 = 51,008 : x
  2. Step 2: Convert to fraction form
    77,877.12/107,432.96 = 51,008/x
  3. Step 3: Cross multiply
    77,877.12x = 107,432.96 × 51,008
  4. Step 4: Simplify right side
    77,877.12x = 5,479,940,423.68
  5. Step 5: Solve for x
    x = 5,479,940,423.68/77,877.12
  6. Step 6: Final answer
    x = 70,366.50

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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.