Home / 81,238.60-121,802.28-43,293.52

Finding the Fourth Proportional to 81,238.60, 121,802.28 and 43,293.52

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Solution

The fourth proportional to 81,238.60, 121,802.28 and 43,293.52 is: 64,910.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,238.60 : 121,802.28 = 43,293.52 : x
  2. Step 2: Convert to fraction form
    81,238.60/121,802.28 = 43,293.52/x
  3. Step 3: Cross multiply
    81,238.60x = 121,802.28 × 43,293.52
  4. Step 4: Simplify right side
    81,238.60x = 5,273,249,445.23
  5. Step 5: Solve for x
    x = 5,273,249,445.23/81,238.60
  6. Step 6: Final answer
    x = 64,910.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.