Home / 48,683.10-72,672.48-42,778.20

Finding the Fourth Proportional to 48,683.10, 72,672.48 and 42,778.20

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Solution

The fourth proportional to 48,683.10, 72,672.48 and 42,778.20 is: 63,857.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,683.10 : 72,672.48 = 42,778.20 : x
  2. Step 2: Convert to fraction form
    48,683.10/72,672.48 = 42,778.20/x
  3. Step 3: Cross multiply
    48,683.10x = 72,672.48 × 42,778.20
  4. Step 4: Simplify right side
    48,683.10x = 3,108,797,883.94
  5. Step 5: Solve for x
    x = 3,108,797,883.94/48,683.10
  6. Step 6: Final answer
    x = 63,857.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.