Home / 91,338.48-125,812.68-64,433.76

Finding the Fourth Proportional to 91,338.48, 125,812.68 and 64,433.76

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Solution

The fourth proportional to 91,338.48, 125,812.68 and 64,433.76 is: 88,753.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,338.48 : 125,812.68 = 64,433.76 : x
  2. Step 2: Convert to fraction form
    91,338.48/125,812.68 = 64,433.76/x
  3. Step 3: Cross multiply
    91,338.48x = 125,812.68 × 64,433.76
  4. Step 4: Simplify right side
    91,338.48x = 8,106,584,028.08
  5. Step 5: Solve for x
    x = 8,106,584,028.08/91,338.48
  6. Step 6: Final answer
    x = 88,753.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.