Home / 77,024.28-115,419.78-57,210.60

Finding the Fourth Proportional to 77,024.28, 115,419.78 and 57,210.60

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Solution

The fourth proportional to 77,024.28, 115,419.78 and 57,210.60 is: 85,729.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,024.28 : 115,419.78 = 57,210.60 : x
  2. Step 2: Convert to fraction form
    77,024.28/115,419.78 = 57,210.60/x
  3. Step 3: Cross multiply
    77,024.28x = 115,419.78 × 57,210.60
  4. Step 4: Simplify right side
    77,024.28x = 6,603,234,865.67
  5. Step 5: Solve for x
    x = 6,603,234,865.67/77,024.28
  6. Step 6: Final answer
    x = 85,729.26

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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.