Home / 57,140.10-85,710.15-38,477.70

Finding the Fourth Proportional to 57,140.10, 85,710.15 and 38,477.70

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Solution

The fourth proportional to 57,140.10, 85,710.15 and 38,477.70 is: 57,716.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,140.10 : 85,710.15 = 38,477.70 : x
  2. Step 2: Convert to fraction form
    57,140.10/85,710.15 = 38,477.70/x
  3. Step 3: Cross multiply
    57,140.10x = 85,710.15 × 38,477.70
  4. Step 4: Simplify right side
    57,140.10x = 3,297,929,438.66
  5. Step 5: Solve for x
    x = 3,297,929,438.66/57,140.10
  6. Step 6: Final answer
    x = 57,716.55

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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.