Home / 42,680.51-63,989.06-20,472.74

Finding the Fourth Proportional to 42,680.51, 63,989.06 and 20,472.74

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Solution

The fourth proportional to 42,680.51, 63,989.06 and 20,472.74 is: 30,693.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,680.51 : 63,989.06 = 20,472.74 : x
  2. Step 2: Convert to fraction form
    42,680.51/63,989.06 = 20,472.74/x
  3. Step 3: Cross multiply
    42,680.51x = 63,989.06 × 20,472.74
  4. Step 4: Simplify right side
    42,680.51x = 1,310,030,965.92
  5. Step 5: Solve for x
    x = 1,310,030,965.92/42,680.51
  6. Step 6: Final answer
    x = 30,693.90

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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.