Home / 70,233.90-105,335.05-20,302.86

Finding the Fourth Proportional to 70,233.90, 105,335.05 and 20,302.86

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Solution

The fourth proportional to 70,233.90, 105,335.05 and 20,302.86 is: 30,449.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,233.90 : 105,335.05 = 20,302.86 : x
  2. Step 2: Convert to fraction form
    70,233.90/105,335.05 = 20,302.86/x
  3. Step 3: Cross multiply
    70,233.90x = 105,335.05 × 20,302.86
  4. Step 4: Simplify right side
    70,233.90x = 2,138,602,773.24
  5. Step 5: Solve for x
    x = 2,138,602,773.24/70,233.90
  6. Step 6: Final answer
    x = 30,449.72

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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.