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Finding the Fourth Proportional to 57,681.70, 86,522.55 and 18,250.90

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Solution

The fourth proportional to 57,681.70, 86,522.55 and 18,250.90 is: 27,376.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,681.70 : 86,522.55 = 18,250.90 : x
  2. Step 2: Convert to fraction form
    57,681.70/86,522.55 = 18,250.90/x
  3. Step 3: Cross multiply
    57,681.70x = 86,522.55 × 18,250.90
  4. Step 4: Simplify right side
    57,681.70x = 1,579,114,407.80
  5. Step 5: Solve for x
    x = 1,579,114,407.80/57,681.70
  6. Step 6: Final answer
    x = 27,376.35

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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.