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Finding the Fourth Proportional to 57,240.84, 85,860.30 and 15,687.84

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Solution

The fourth proportional to 57,240.84, 85,860.30 and 15,687.84 is: 23,531.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,240.84 : 85,860.30 = 15,687.84 : x
  2. Step 2: Convert to fraction form
    57,240.84/85,860.30 = 15,687.84/x
  3. Step 3: Cross multiply
    57,240.84x = 85,860.30 × 15,687.84
  4. Step 4: Simplify right side
    57,240.84x = 1,346,962,648.75
  5. Step 5: Solve for x
    x = 1,346,962,648.75/57,240.84
  6. Step 6: Final answer
    x = 23,531.50

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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.