Home / 77,032.16-115,500-30,230.72

Finding the Fourth Proportional to 77,032.16, 115,500 and 30,230.72

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Solution

The fourth proportional to 77,032.16, 115,500 and 30,230.72 is: 45,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,032.16 : 115,500 = 30,230.72 : x
  2. Step 2: Convert to fraction form
    77,032.16/115,500 = 30,230.72/x
  3. Step 3: Cross multiply
    77,032.16x = 115,500 × 30,230.72
  4. Step 4: Simplify right side
    77,032.16x = 3,491,648,160
  5. Step 5: Solve for x
    x = 3,491,648,160/77,032.16
  6. Step 6: Final answer
    x = 45,327.15

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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.