Home / 60,587.76-90,896.40-21,145.20

Finding the Fourth Proportional to 60,587.76, 90,896.40 and 21,145.20

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Solution

The fourth proportional to 60,587.76, 90,896.40 and 21,145.20 is: 31,722.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,587.76 : 90,896.40 = 21,145.20 : x
  2. Step 2: Convert to fraction form
    60,587.76/90,896.40 = 21,145.20/x
  3. Step 3: Cross multiply
    60,587.76x = 90,896.40 × 21,145.20
  4. Step 4: Simplify right side
    60,587.76x = 1,922,022,557.28
  5. Step 5: Solve for x
    x = 1,922,022,557.28/60,587.76
  6. Step 6: Final answer
    x = 31,722.95

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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.