Home / 81,035.64-121,401.59-47,655.95

Finding the Fourth Proportional to 81,035.64, 121,401.59 and 47,655.95

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Solution

The fourth proportional to 81,035.64, 121,401.59 and 47,655.95 is: 71,394.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,035.64 : 121,401.59 = 47,655.95 : x
  2. Step 2: Convert to fraction form
    81,035.64/121,401.59 = 47,655.95/x
  3. Step 3: Cross multiply
    81,035.64x = 121,401.59 × 47,655.95
  4. Step 4: Simplify right side
    81,035.64x = 5,785,507,257.67
  5. Step 5: Solve for x
    x = 5,785,507,257.67/81,035.64
  6. Step 6: Final answer
    x = 71,394.60

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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.