Home / 77,916.60-107,534.82-51,081.72

Finding the Fourth Proportional to 77,916.60, 107,534.82 and 51,081.72

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Solution

The fourth proportional to 77,916.60, 107,534.82 and 51,081.72 is: 70,499.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,916.60 : 107,534.82 = 51,081.72 : x
  2. Step 2: Convert to fraction form
    77,916.60/107,534.82 = 51,081.72/x
  3. Step 3: Cross multiply
    77,916.60x = 107,534.82 × 51,081.72
  4. Step 4: Simplify right side
    77,916.60x = 5,493,063,565.49
  5. Step 5: Solve for x
    x = 5,493,063,565.49/77,916.60
  6. Step 6: Final answer
    x = 70,499.27

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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.