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Finding the Fourth Proportional to 88,113.79, 121,289.72 and 76,052.54

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Solution

The fourth proportional to 88,113.79, 121,289.72 and 76,052.54 is: 104,687.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,113.79 : 121,289.72 = 76,052.54 : x
  2. Step 2: Convert to fraction form
    88,113.79/121,289.72 = 76,052.54/x
  3. Step 3: Cross multiply
    88,113.79x = 121,289.72 × 76,052.54
  4. Step 4: Simplify right side
    88,113.79x = 9,224,390,295.18
  5. Step 5: Solve for x
    x = 9,224,390,295.18/88,113.79
  6. Step 6: Final answer
    x = 104,687.25

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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.