Home / 85,738.16-128,560.26-26,557.40

Finding the Fourth Proportional to 85,738.16, 128,560.26 and 26,557.40

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Solution

The fourth proportional to 85,738.16, 128,560.26 and 26,557.40 is: 39,821.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,738.16 : 128,560.26 = 26,557.40 : x
  2. Step 2: Convert to fraction form
    85,738.16/128,560.26 = 26,557.40/x
  3. Step 3: Cross multiply
    85,738.16x = 128,560.26 × 26,557.40
  4. Step 4: Simplify right side
    85,738.16x = 3,414,226,248.92
  5. Step 5: Solve for x
    x = 3,414,226,248.92/85,738.16
  6. Step 6: Final answer
    x = 39,821.55

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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.