Home / 88,137.76-121,629.72-47,851.20

Finding the Fourth Proportional to 88,137.76, 121,629.72 and 47,851.20

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Solution

The fourth proportional to 88,137.76, 121,629.72 and 47,851.20 is: 66,034.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,137.76 : 121,629.72 = 47,851.20 : x
  2. Step 2: Convert to fraction form
    88,137.76/121,629.72 = 47,851.20/x
  3. Step 3: Cross multiply
    88,137.76x = 121,629.72 × 47,851.20
  4. Step 4: Simplify right side
    88,137.76x = 5,820,128,057.66
  5. Step 5: Solve for x
    x = 5,820,128,057.66/88,137.76
  6. Step 6: Final answer
    x = 66,034.44

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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.