Home / 85,424.27-128,063.49-60,385.55

Finding the Fourth Proportional to 85,424.27, 128,063.49 and 60,385.55

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Solution

The fourth proportional to 85,424.27, 128,063.49 and 60,385.55 is: 90,526.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,424.27 : 128,063.49 = 60,385.55 : x
  2. Step 2: Convert to fraction form
    85,424.27/128,063.49 = 60,385.55/x
  3. Step 3: Cross multiply
    85,424.27x = 128,063.49 × 60,385.55
  4. Step 4: Simplify right side
    85,424.27x = 7,733,183,638.25
  5. Step 5: Solve for x
    x = 7,733,183,638.25/85,424.27
  6. Step 6: Final answer
    x = 90,526.78

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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.