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Finding the Fourth Proportional to 56,763.84, 85,145.76 and 17,321.16

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Solution

The fourth proportional to 56,763.84, 85,145.76 and 17,321.16 is: 25,981.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,763.84 : 85,145.76 = 17,321.16 : x
  2. Step 2: Convert to fraction form
    56,763.84/85,145.76 = 17,321.16/x
  3. Step 3: Cross multiply
    56,763.84x = 85,145.76 × 17,321.16
  4. Step 4: Simplify right side
    56,763.84x = 1,474,823,332.28
  5. Step 5: Solve for x
    x = 1,474,823,332.28/56,763.84
  6. Step 6: Final answer
    x = 25,981.74

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Similar ratio
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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.