Home / 70,221.23-96,905.64-38,390.13

Finding the Fourth Proportional to 70,221.23, 96,905.64 and 38,390.13

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Solution

The fourth proportional to 70,221.23, 96,905.64 and 38,390.13 is: 52,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,221.23 : 96,905.64 = 38,390.13 : x
  2. Step 2: Convert to fraction form
    70,221.23/96,905.64 = 38,390.13/x
  3. Step 3: Cross multiply
    70,221.23x = 96,905.64 × 38,390.13
  4. Step 4: Simplify right side
    70,221.23x = 3,720,220,117.33
  5. Step 5: Solve for x
    x = 3,720,220,117.33/70,221.23
  6. Step 6: Final answer
    x = 52,978.57

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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.