Home / 57,807.85-86,718.72-20,360.18

Finding the Fourth Proportional to 57,807.85, 86,718.72 and 20,360.18

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Solution

The fourth proportional to 57,807.85, 86,718.72 and 20,360.18 is: 30,542.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,807.85 : 86,718.72 = 20,360.18 : x
  2. Step 2: Convert to fraction form
    57,807.85/86,718.72 = 20,360.18/x
  3. Step 3: Cross multiply
    57,807.85x = 86,718.72 × 20,360.18
  4. Step 4: Simplify right side
    57,807.85x = 1,765,608,748.57
  5. Step 5: Solve for x
    x = 1,765,608,748.57/57,807.85
  6. Step 6: Final answer
    x = 30,542.72

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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.