Home / 67,752.48-101,638.56-21,009.12

Finding the Fourth Proportional to 67,752.48, 101,638.56 and 21,009.12

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Solution

The fourth proportional to 67,752.48, 101,638.56 and 21,009.12 is: 31,516.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,752.48 : 101,638.56 = 21,009.12 : x
  2. Step 2: Convert to fraction form
    67,752.48/101,638.56 = 21,009.12/x
  3. Step 3: Cross multiply
    67,752.48x = 101,638.56 × 21,009.12
  4. Step 4: Simplify right side
    67,752.48x = 2,135,336,703.67
  5. Step 5: Solve for x
    x = 2,135,336,703.67/67,752.48
  6. Step 6: Final answer
    x = 31,516.73

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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.