Home / 77,155.86-115,743-27,225.62

Finding the Fourth Proportional to 77,155.86, 115,743 and 27,225.62

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Solution

The fourth proportional to 77,155.86, 115,743 and 27,225.62 is: 40,841.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,155.86 : 115,743 = 27,225.62 : x
  2. Step 2: Convert to fraction form
    77,155.86/115,743 = 27,225.62/x
  3. Step 3: Cross multiply
    77,155.86x = 115,743 × 27,225.62
  4. Step 4: Simplify right side
    77,155.86x = 3,151,174,935.66
  5. Step 5: Solve for x
    x = 3,151,174,935.66/77,155.86
  6. Step 6: Final answer
    x = 40,841.68

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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.