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Finding the Fourth Proportional to 88,101.80, 121,580.57 and 47,815.59

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Solution

The fourth proportional to 88,101.80, 121,580.57 and 47,815.59 is: 65,985.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,101.80 : 121,580.57 = 47,815.59 : x
  2. Step 2: Convert to fraction form
    88,101.80/121,580.57 = 47,815.59/x
  3. Step 3: Cross multiply
    88,101.80x = 121,580.57 × 47,815.59
  4. Step 4: Simplify right side
    88,101.80x = 5,813,446,687.09
  5. Step 5: Solve for x
    x = 5,813,446,687.09/88,101.80
  6. Step 6: Final answer
    x = 65,985.56

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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.