Home / 85,553.20-128,475.60-60,767.20

Finding the Fourth Proportional to 85,553.20, 128,475.60 and 60,767.20

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Solution

The fourth proportional to 85,553.20, 128,475.60 and 60,767.20 is: 91,254.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,553.20 : 128,475.60 = 60,767.20 : x
  2. Step 2: Convert to fraction form
    85,553.20/128,475.60 = 60,767.20/x
  3. Step 3: Cross multiply
    85,553.20x = 128,475.60 × 60,767.20
  4. Step 4: Simplify right side
    85,553.20x = 7,807,102,480.32
  5. Step 5: Solve for x
    x = 7,807,102,480.32/85,553.20
  6. Step 6: Final answer
    x = 91,254.36

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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.