Home / 78,199.52-117,299.22-31,441.46

Finding the Fourth Proportional to 78,199.52, 117,299.22 and 31,441.46

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Solution

The fourth proportional to 78,199.52, 117,299.22 and 31,441.46 is: 47,162.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,199.52 : 117,299.22 = 31,441.46 : x
  2. Step 2: Convert to fraction form
    78,199.52/117,299.22 = 31,441.46/x
  3. Step 3: Cross multiply
    78,199.52x = 117,299.22 × 31,441.46
  4. Step 4: Simplify right side
    78,199.52x = 3,688,058,733.66
  5. Step 5: Solve for x
    x = 3,688,058,733.66/78,199.52
  6. Step 6: Final answer
    x = 47,162.17

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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.