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Finding the Fourth Proportional to 72,594.20, 100,176.90 and 42,381.20

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Solution

The fourth proportional to 72,594.20, 100,176.90 and 42,381.20 is: 58,484.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,594.20 : 100,176.90 = 42,381.20 : x
  2. Step 2: Convert to fraction form
    72,594.20/100,176.90 = 42,381.20/x
  3. Step 3: Cross multiply
    72,594.20x = 100,176.90 × 42,381.20
  4. Step 4: Simplify right side
    72,594.20x = 4,245,617,234.28
  5. Step 5: Solve for x
    x = 4,245,617,234.28/72,594.20
  6. Step 6: Final answer
    x = 58,484.25

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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.