Home / 70,920.12-106,380.51-21,001.16

Finding the Fourth Proportional to 70,920.12, 106,380.51 and 21,001.16

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Solution

The fourth proportional to 70,920.12, 106,380.51 and 21,001.16 is: 31,501.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,920.12 : 106,380.51 = 21,001.16 : x
  2. Step 2: Convert to fraction form
    70,920.12/106,380.51 = 21,001.16/x
  3. Step 3: Cross multiply
    70,920.12x = 106,380.51 × 21,001.16
  4. Step 4: Simplify right side
    70,920.12x = 2,234,113,579.49
  5. Step 5: Solve for x
    x = 2,234,113,579.49/70,920.12
  6. Step 6: Final answer
    x = 31,501.83

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1.5x scale

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.