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Finding the Fourth Proportional to 69,691.58, 96,189.69 and 45,820.47

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Solution

The fourth proportional to 69,691.58, 96,189.69 and 45,820.47 is: 63,242.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,691.58 : 96,189.69 = 45,820.47 : x
  2. Step 2: Convert to fraction form
    69,691.58/96,189.69 = 45,820.47/x
  3. Step 3: Cross multiply
    69,691.58x = 96,189.69 × 45,820.47
  4. Step 4: Simplify right side
    69,691.58x = 4,407,456,804.95
  5. Step 5: Solve for x
    x = 4,407,456,804.95/69,691.58
  6. Step 6: Final answer
    x = 63,242.32

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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.