Home / 85,529.52-128,315.19-60,278.31

Finding the Fourth Proportional to 85,529.52, 128,315.19 and 60,278.31

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Solution

The fourth proportional to 85,529.52, 128,315.19 and 60,278.31 is: 90,432.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,529.52 : 128,315.19 = 60,278.31 : x
  2. Step 2: Convert to fraction form
    85,529.52/128,315.19 = 60,278.31/x
  3. Step 3: Cross multiply
    85,529.52x = 128,315.19 × 60,278.31
  4. Step 4: Simplify right side
    85,529.52x = 7,734,622,800.53
  5. Step 5: Solve for x
    x = 7,734,622,800.53/85,529.52
  6. Step 6: Final answer
    x = 90,432.20

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1.5x scale

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.