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Finding the Fourth Proportional to 30,697.52, 45,987 and 25,707.92

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Solution

The fourth proportional to 30,697.52, 45,987 and 25,707.92 is: 38,512.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,697.52 : 45,987 = 25,707.92 : x
  2. Step 2: Convert to fraction form
    30,697.52/45,987 = 25,707.92/x
  3. Step 3: Cross multiply
    30,697.52x = 45,987 × 25,707.92
  4. Step 4: Simplify right side
    30,697.52x = 1,182,230,117.04
  5. Step 5: Solve for x
    x = 1,182,230,117.04/30,697.52
  6. Step 6: Final answer
    x = 38,512.24

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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.