Home / 77,127.62-115,559.40-42,091.88

Finding the Fourth Proportional to 77,127.62, 115,559.40 and 42,091.88

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Solution

The fourth proportional to 77,127.62, 115,559.40 and 42,091.88 is: 63,065.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,127.62 : 115,559.40 = 42,091.88 : x
  2. Step 2: Convert to fraction form
    77,127.62/115,559.40 = 42,091.88/x
  3. Step 3: Cross multiply
    77,127.62x = 115,559.40 × 42,091.88
  4. Step 4: Simplify right side
    77,127.62x = 4,864,112,397.67
  5. Step 5: Solve for x
    x = 4,864,112,397.67/77,127.62
  6. Step 6: Final answer
    x = 63,065.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.