Home / 48,421.32-72,660-20,338.92

Finding the Fourth Proportional to 48,421.32, 72,660 and 20,338.92

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Solution

The fourth proportional to 48,421.32, 72,660 and 20,338.92 is: 30,520.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,421.32 : 72,660 = 20,338.92 : x
  2. Step 2: Convert to fraction form
    48,421.32/72,660 = 20,338.92/x
  3. Step 3: Cross multiply
    48,421.32x = 72,660 × 20,338.92
  4. Step 4: Simplify right side
    48,421.32x = 1,477,825,927.20
  5. Step 5: Solve for x
    x = 1,477,825,927.20/48,421.32
  6. Step 6: Final answer
    x = 30,520.15

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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.