Home / 85,302.24-117,740.52-49,503.78

Finding the Fourth Proportional to 85,302.24, 117,740.52 and 49,503.78

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Solution

The fourth proportional to 85,302.24, 117,740.52 and 49,503.78 is: 68,328.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,302.24 : 117,740.52 = 49,503.78 : x
  2. Step 2: Convert to fraction form
    85,302.24/117,740.52 = 49,503.78/x
  3. Step 3: Cross multiply
    85,302.24x = 117,740.52 × 49,503.78
  4. Step 4: Simplify right side
    85,302.24x = 5,828,600,799.17
  5. Step 5: Solve for x
    x = 5,828,600,799.17/85,302.24
  6. Step 6: Final answer
    x = 68,328.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.