Home / 72,397.20-108,590.40-30,266.40

Finding the Fourth Proportional to 72,397.20, 108,590.40 and 30,266.40

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Solution

The fourth proportional to 72,397.20, 108,590.40 and 30,266.40 is: 45,397.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,397.20 : 108,590.40 = 30,266.40 : x
  2. Step 2: Convert to fraction form
    72,397.20/108,590.40 = 30,266.40/x
  3. Step 3: Cross multiply
    72,397.20x = 108,590.40 × 30,266.40
  4. Step 4: Simplify right side
    72,397.20x = 3,286,640,482.56
  5. Step 5: Solve for x
    x = 3,286,640,482.56/72,397.20
  6. Step 6: Final answer
    x = 45,397.34

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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.