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Finding the Fourth Proportional to 88,235, 121,764.32 and 48,491

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Solution

The fourth proportional to 88,235, 121,764.32 and 48,491 is: 66,917.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,235 : 121,764.32 = 48,491 : x
  2. Step 2: Convert to fraction form
    88,235/121,764.32 = 48,491/x
  3. Step 3: Cross multiply
    88,235x = 121,764.32 × 48,491
  4. Step 4: Simplify right side
    88,235x = 5,904,473,641.12
  5. Step 5: Solve for x
    x = 5,904,473,641.12/88,235
  6. Step 6: Final answer
    x = 66,917.59

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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.