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Finding the Fourth Proportional to 57,878.70, 86,758.84 and 39,160.71

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Solution

The fourth proportional to 57,878.70, 86,758.84 and 39,160.71 is: 58,701.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,878.70 : 86,758.84 = 39,160.71 : x
  2. Step 2: Convert to fraction form
    57,878.70/86,758.84 = 39,160.71/x
  3. Step 3: Cross multiply
    57,878.70x = 86,758.84 × 39,160.71
  4. Step 4: Simplify right side
    57,878.70x = 3,397,537,556.28
  5. Step 5: Solve for x
    x = 3,397,537,556.28/57,878.70
  6. Step 6: Final answer
    x = 58,701.00

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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.