Home / 88,121.40-121,608.48-47,835.54

Finding the Fourth Proportional to 88,121.40, 121,608.48 and 47,835.54

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Solution

The fourth proportional to 88,121.40, 121,608.48 and 47,835.54 is: 66,013.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,121.40 : 121,608.48 = 47,835.54 : x
  2. Step 2: Convert to fraction form
    88,121.40/121,608.48 = 47,835.54/x
  3. Step 3: Cross multiply
    88,121.40x = 121,608.48 × 47,835.54
  4. Step 4: Simplify right side
    88,121.40x = 5,817,207,309.38
  5. Step 5: Solve for x
    x = 5,817,207,309.38/88,121.40
  6. Step 6: Final answer
    x = 66,013.56

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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.