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Finding the Fourth Proportional to 28,110.80, 42,079.80 and 25,000.40

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Solution

The fourth proportional to 28,110.80, 42,079.80 and 25,000.40 is: 37,423.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.80 : 42,079.80 = 25,000.40 : x
  2. Step 2: Convert to fraction form
    28,110.80/42,079.80 = 25,000.40/x
  3. Step 3: Cross multiply
    28,110.80x = 42,079.80 × 25,000.40
  4. Step 4: Simplify right side
    28,110.80x = 1,052,011,831.92
  5. Step 5: Solve for x
    x = 1,052,011,831.92/28,110.80
  6. Step 6: Final answer
    x = 37,423.76

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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.