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Finding the Fourth Proportional to 88,955.80, 122,740.86 and 51,242.20

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Solution

The fourth proportional to 88,955.80, 122,740.86 and 51,242.20 is: 70,703.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,955.80 : 122,740.86 = 51,242.20 : x
  2. Step 2: Convert to fraction form
    88,955.80/122,740.86 = 51,242.20/x
  3. Step 3: Cross multiply
    88,955.80x = 122,740.86 × 51,242.20
  4. Step 4: Simplify right side
    88,955.80x = 6,289,511,696.29
  5. Step 5: Solve for x
    x = 6,289,511,696.29/88,955.80
  6. Step 6: Final answer
    x = 70,703.78

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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.