Home / 85,540.70-128,331.95-60,289.46

Finding the Fourth Proportional to 85,540.70, 128,331.95 and 60,289.46

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Solution

The fourth proportional to 85,540.70, 128,331.95 and 60,289.46 is: 90,448.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,540.70 : 128,331.95 = 60,289.46 : x
  2. Step 2: Convert to fraction form
    85,540.70/128,331.95 = 60,289.46/x
  3. Step 3: Cross multiply
    85,540.70x = 128,331.95 × 60,289.46
  4. Step 4: Simplify right side
    85,540.70x = 7,737,063,023.14
  5. Step 5: Solve for x
    x = 7,737,063,023.14/85,540.70
  6. Step 6: Final answer
    x = 90,448.91

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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.