Home / 81,281.40-121,973.92-34,534.26

Finding the Fourth Proportional to 81,281.40, 121,973.92 and 34,534.26

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Solution

The fourth proportional to 81,281.40, 121,973.92 and 34,534.26 is: 51,823.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,281.40 : 121,973.92 = 34,534.26 : x
  2. Step 2: Convert to fraction form
    81,281.40/121,973.92 = 34,534.26/x
  3. Step 3: Cross multiply
    81,281.40x = 121,973.92 × 34,534.26
  4. Step 4: Simplify right side
    81,281.40x = 4,212,279,066.50
  5. Step 5: Solve for x
    x = 4,212,279,066.50/81,281.40
  6. Step 6: Final answer
    x = 51,823.41

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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.