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Finding the Fourth Proportional to 70,287.66, 96,999.30 and 38,456.60

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Solution

The fourth proportional to 70,287.66, 96,999.30 and 38,456.60 is: 53,071.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,287.66 : 96,999.30 = 38,456.60 : x
  2. Step 2: Convert to fraction form
    70,287.66/96,999.30 = 38,456.60/x
  3. Step 3: Cross multiply
    70,287.66x = 96,999.30 × 38,456.60
  4. Step 4: Simplify right side
    70,287.66x = 3,730,262,795.38
  5. Step 5: Solve for x
    x = 3,730,262,795.38/70,287.66
  6. Step 6: Final answer
    x = 53,071.38

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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.