Home / 60,378.12-90,581.76-20,934.36

Finding the Fourth Proportional to 60,378.12, 90,581.76 and 20,934.36

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Solution

The fourth proportional to 60,378.12, 90,581.76 and 20,934.36 is: 31,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,378.12 : 90,581.76 = 20,934.36 : x
  2. Step 2: Convert to fraction form
    60,378.12/90,581.76 = 20,934.36/x
  3. Step 3: Cross multiply
    60,378.12x = 90,581.76 × 20,934.36
  4. Step 4: Simplify right side
    60,378.12x = 1,896,271,173.27
  5. Step 5: Solve for x
    x = 1,896,271,173.27/60,378.12
  6. Step 6: Final answer
    x = 31,406.60

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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.