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Finding the Fourth Proportional to 88,066.92, 121,530.78 and 47,780.76

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Solution

The fourth proportional to 88,066.92, 121,530.78 and 47,780.76 is: 65,936.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,066.92 : 121,530.78 = 47,780.76 : x
  2. Step 2: Convert to fraction form
    88,066.92/121,530.78 = 47,780.76/x
  3. Step 3: Cross multiply
    88,066.92x = 121,530.78 × 47,780.76
  4. Step 4: Simplify right side
    88,066.92x = 5,806,833,031.79
  5. Step 5: Solve for x
    x = 5,806,833,031.79/88,066.92
  6. Step 6: Final answer
    x = 65,936.60

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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.