Home / 81,281.39-121,973.93-34,534.27

Finding the Fourth Proportional to 81,281.39, 121,973.93 and 34,534.27

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Solution

The fourth proportional to 81,281.39, 121,973.93 and 34,534.27 is: 51,823.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,281.39 : 121,973.93 = 34,534.27 : x
  2. Step 2: Convert to fraction form
    81,281.39/121,973.93 = 34,534.27/x
  3. Step 3: Cross multiply
    81,281.39x = 121,973.93 × 34,534.27
  4. Step 4: Simplify right side
    81,281.39x = 4,212,280,631.58
  5. Step 5: Solve for x
    x = 4,212,280,631.58/81,281.39
  6. Step 6: Final answer
    x = 51,823.43

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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.