Home / 41,690.12-57,510.84-28,256.78

Finding the Fourth Proportional to 41,690.12, 57,510.84 and 28,256.78

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Solution

The fourth proportional to 41,690.12, 57,510.84 and 28,256.78 is: 38,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,690.12 : 57,510.84 = 28,256.78 : x
  2. Step 2: Convert to fraction form
    41,690.12/57,510.84 = 28,256.78/x
  3. Step 3: Cross multiply
    41,690.12x = 57,510.84 × 28,256.78
  4. Step 4: Simplify right side
    41,690.12x = 1,625,071,153.50
  5. Step 5: Solve for x
    x = 1,625,071,153.50/41,690.12
  6. Step 6: Final answer
    x = 38,979.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.