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Finding the Fourth Proportional to 85,598.91, 128,397.42 and 26,427.87

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Solution

The fourth proportional to 85,598.91, 128,397.42 and 26,427.87 is: 39,641.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,598.91 : 128,397.42 = 26,427.87 : x
  2. Step 2: Convert to fraction form
    85,598.91/128,397.42 = 26,427.87/x
  3. Step 3: Cross multiply
    85,598.91x = 128,397.42 × 26,427.87
  4. Step 4: Simplify right side
    85,598.91x = 3,393,270,324.10
  5. Step 5: Solve for x
    x = 3,393,270,324.10/85,598.91
  6. Step 6: Final answer
    x = 39,641.51

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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.