Home / 85,520.64-128,073.60-59,151.36

Finding the Fourth Proportional to 85,520.64, 128,073.60 and 59,151.36

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Solution

The fourth proportional to 85,520.64, 128,073.60 and 59,151.36 is: 88,583.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520.64 : 128,073.60 = 59,151.36 : x
  2. Step 2: Convert to fraction form
    85,520.64/128,073.60 = 59,151.36/x
  3. Step 3: Cross multiply
    85,520.64x = 128,073.60 × 59,151.36
  4. Step 4: Simplify right side
    85,520.64x = 7,575,727,620.10
  5. Step 5: Solve for x
    x = 7,575,727,620.10/85,520.64
  6. Step 6: Final answer
    x = 88,583.62

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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.