Home / 88,208.20-121,726.80-47,921.64

Finding the Fourth Proportional to 88,208.20, 121,726.80 and 47,921.64

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Solution

The fourth proportional to 88,208.20, 121,726.80 and 47,921.64 is: 66,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,208.20 : 121,726.80 = 47,921.64 : x
  2. Step 2: Convert to fraction form
    88,208.20/121,726.80 = 47,921.64/x
  3. Step 3: Cross multiply
    88,208.20x = 121,726.80 × 47,921.64
  4. Step 4: Simplify right side
    88,208.20x = 5,833,347,887.95
  5. Step 5: Solve for x
    x = 5,833,347,887.95/88,208.20
  6. Step 6: Final answer
    x = 66,131.58

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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.