Home / 43,973.20-65,959.80-20,280.70

Finding the Fourth Proportional to 43,973.20, 65,959.80 and 20,280.70

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Solution

The fourth proportional to 43,973.20, 65,959.80 and 20,280.70 is: 30,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,973.20 : 65,959.80 = 20,280.70 : x
  2. Step 2: Convert to fraction form
    43,973.20/65,959.80 = 20,280.70/x
  3. Step 3: Cross multiply
    43,973.20x = 65,959.80 × 20,280.70
  4. Step 4: Simplify right side
    43,973.20x = 1,337,710,915.86
  5. Step 5: Solve for x
    x = 1,337,710,915.86/43,973.20
  6. Step 6: Final answer
    x = 30,421.05

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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.