Home / 85,527.13-128,311.61-60,275.91

Finding the Fourth Proportional to 85,527.13, 128,311.61 and 60,275.91

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Solution

The fourth proportional to 85,527.13, 128,311.61 and 60,275.91 is: 90,428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,527.13 : 128,311.61 = 60,275.91 : x
  2. Step 2: Convert to fraction form
    85,527.13/128,311.61 = 60,275.91/x
  3. Step 3: Cross multiply
    85,527.13x = 128,311.61 × 60,275.91
  4. Step 4: Simplify right side
    85,527.13x = 7,734,098,612.82
  5. Step 5: Solve for x
    x = 7,734,098,612.82/85,527.13
  6. Step 6: Final answer
    x = 90,428.60

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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.