Home / 85,501.93-128,255.10-40,512.73

Finding the Fourth Proportional to 85,501.93, 128,255.10 and 40,512.73

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Solution

The fourth proportional to 85,501.93, 128,255.10 and 40,512.73 is: 60,770.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,501.93 : 128,255.10 = 40,512.73 : x
  2. Step 2: Convert to fraction form
    85,501.93/128,255.10 = 40,512.73/x
  3. Step 3: Cross multiply
    85,501.93x = 128,255.10 × 40,512.73
  4. Step 4: Simplify right side
    85,501.93x = 5,195,964,237.42
  5. Step 5: Solve for x
    x = 5,195,964,237.42/85,501.93
  6. Step 6: Final answer
    x = 60,770.14

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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.