Home / 77,854.02-116,781.03-18,689.69

Finding the Fourth Proportional to 77,854.02, 116,781.03 and 18,689.69

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Solution

The fourth proportional to 77,854.02, 116,781.03 and 18,689.69 is: 28,034.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,854.02 : 116,781.03 = 18,689.69 : x
  2. Step 2: Convert to fraction form
    77,854.02/116,781.03 = 18,689.69/x
  3. Step 3: Cross multiply
    77,854.02x = 116,781.03 × 18,689.69
  4. Step 4: Simplify right side
    77,854.02x = 2,182,601,540.53
  5. Step 5: Solve for x
    x = 2,182,601,540.53/77,854.02
  6. Step 6: Final answer
    x = 28,034.54

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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.