Home / 72,793.20-100,417.80-42,558.72

Finding the Fourth Proportional to 72,793.20, 100,417.80 and 42,558.72

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Solution

The fourth proportional to 72,793.20, 100,417.80 and 42,558.72 is: 58,709.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,793.20 : 100,417.80 = 42,558.72 : x
  2. Step 2: Convert to fraction form
    72,793.20/100,417.80 = 42,558.72/x
  3. Step 3: Cross multiply
    72,793.20x = 100,417.80 × 42,558.72
  4. Step 4: Simplify right side
    72,793.20x = 4,273,653,033.22
  5. Step 5: Solve for x
    x = 4,273,653,033.22/72,793.20
  6. Step 6: Final answer
    x = 58,709.51

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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.