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Finding the Fourth Proportional to 70,751.34, 97,638.36 and 38,920.24

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Solution

The fourth proportional to 70,751.34, 97,638.36 and 38,920.24 is: 53,710.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,751.34 : 97,638.36 = 38,920.24 : x
  2. Step 2: Convert to fraction form
    70,751.34/97,638.36 = 38,920.24/x
  3. Step 3: Cross multiply
    70,751.34x = 97,638.36 × 38,920.24
  4. Step 4: Simplify right side
    70,751.34x = 3,800,108,404.41
  5. Step 5: Solve for x
    x = 3,800,108,404.41/70,751.34
  6. Step 6: Final answer
    x = 53,710.76

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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.