Home / 78,324.70-108,085.18-42,513.95

Finding the Fourth Proportional to 78,324.70, 108,085.18 and 42,513.95

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Solution

The fourth proportional to 78,324.70, 108,085.18 and 42,513.95 is: 58,667.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,324.70 : 108,085.18 = 42,513.95 : x
  2. Step 2: Convert to fraction form
    78,324.70/108,085.18 = 42,513.95/x
  3. Step 3: Cross multiply
    78,324.70x = 108,085.18 × 42,513.95
  4. Step 4: Simplify right side
    78,324.70x = 4,595,127,938.26
  5. Step 5: Solve for x
    x = 4,595,127,938.26/78,324.70
  6. Step 6: Final answer
    x = 58,667.67

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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.