Home / 72,772.46-100,440.93-42,565.21

Finding the Fourth Proportional to 72,772.46, 100,440.93 and 42,565.21

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Solution

The fourth proportional to 72,772.46, 100,440.93 and 42,565.21 is: 58,748.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,772.46 : 100,440.93 = 42,565.21 : x
  2. Step 2: Convert to fraction form
    72,772.46/100,440.93 = 42,565.21/x
  3. Step 3: Cross multiply
    72,772.46x = 100,440.93 × 42,565.21
  4. Step 4: Simplify right side
    72,772.46x = 4,275,289,278.05
  5. Step 5: Solve for x
    x = 4,275,289,278.05/72,772.46
  6. Step 6: Final answer
    x = 58,748.73

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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.