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Finding the Fourth Proportional to 60,292.05, 90,451.03 and 20,315

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Solution

The fourth proportional to 60,292.05, 90,451.03 and 20,315 is: 30,476.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,292.05 : 90,451.03 = 20,315 : x
  2. Step 2: Convert to fraction form
    60,292.05/90,451.03 = 20,315/x
  3. Step 3: Cross multiply
    60,292.05x = 90,451.03 × 20,315
  4. Step 4: Simplify right side
    60,292.05x = 1,837,512,674.45
  5. Step 5: Solve for x
    x = 1,837,512,674.45/60,292.05
  6. Step 6: Final answer
    x = 30,476.87

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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.