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Finding the Fourth Proportional to 88,275, 121,820.28 and 47,988.84

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Solution

The fourth proportional to 88,275, 121,820.28 and 47,988.84 is: 66,225.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,275 : 121,820.28 = 47,988.84 : x
  2. Step 2: Convert to fraction form
    88,275/121,820.28 = 47,988.84/x
  3. Step 3: Cross multiply
    88,275x = 121,820.28 × 47,988.84
  4. Step 4: Simplify right side
    88,275x = 5,846,013,925.68
  5. Step 5: Solve for x
    x = 5,846,013,925.68/88,275
  6. Step 6: Final answer
    x = 66,225.02

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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.