Home / 88,128.90-121,620.47-47,845.23

Finding the Fourth Proportional to 88,128.90, 121,620.47 and 47,845.23

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Solution

The fourth proportional to 88,128.90, 121,620.47 and 47,845.23 is: 66,027.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,128.90 : 121,620.47 = 47,845.23 : x
  2. Step 2: Convert to fraction form
    88,128.90/121,620.47 = 47,845.23/x
  3. Step 3: Cross multiply
    88,128.90x = 121,620.47 × 47,845.23
  4. Step 4: Simplify right side
    88,128.90x = 5,818,959,120.63
  5. Step 5: Solve for x
    x = 5,818,959,120.63/88,128.90
  6. Step 6: Final answer
    x = 66,027.82

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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.