Home / 70,221.48-96,905.99-38,390.38

Finding the Fourth Proportional to 70,221.48, 96,905.99 and 38,390.38

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Solution

The fourth proportional to 70,221.48, 96,905.99 and 38,390.38 is: 52,978.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,221.48 : 96,905.99 = 38,390.38 : x
  2. Step 2: Convert to fraction form
    70,221.48/96,905.99 = 38,390.38/x
  3. Step 3: Cross multiply
    70,221.48x = 96,905.99 × 38,390.38
  4. Step 4: Simplify right side
    70,221.48x = 3,720,257,780.38
  5. Step 5: Solve for x
    x = 3,720,257,780.38/70,221.48
  6. Step 6: Final answer
    x = 52,978.91

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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.