Home / 30,722.31-42,402.20-29,319.91

Finding the Fourth Proportional to 30,722.31, 42,402.20 and 29,319.91

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Solution

The fourth proportional to 30,722.31, 42,402.20 and 29,319.91 is: 40,466.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,722.31 : 42,402.20 = 29,319.91 : x
  2. Step 2: Convert to fraction form
    30,722.31/42,402.20 = 29,319.91/x
  3. Step 3: Cross multiply
    30,722.31x = 42,402.20 × 29,319.91
  4. Step 4: Simplify right side
    30,722.31x = 1,243,228,435.20
  5. Step 5: Solve for x
    x = 1,243,228,435.20/30,722.31
  6. Step 6: Final answer
    x = 40,466.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.