Home / 70,437.04-105,672.85-20,517.60

Finding the Fourth Proportional to 70,437.04, 105,672.85 and 20,517.60

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Solution

The fourth proportional to 70,437.04, 105,672.85 and 20,517.60 is: 30,781.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,437.04 : 105,672.85 = 20,517.60 : x
  2. Step 2: Convert to fraction form
    70,437.04/105,672.85 = 20,517.60/x
  3. Step 3: Cross multiply
    70,437.04x = 105,672.85 × 20,517.60
  4. Step 4: Simplify right side
    70,437.04x = 2,168,153,164.57
  5. Step 5: Solve for x
    x = 2,168,153,164.57/70,437.04
  6. Step 6: Final answer
    x = 30,781.44

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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.