Home / 78,110.85-107,792.76-42,300.85

Finding the Fourth Proportional to 78,110.85, 107,792.76 and 42,300.85

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Solution

The fourth proportional to 78,110.85, 107,792.76 and 42,300.85 is: 58,375.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,110.85 : 107,792.76 = 42,300.85 : x
  2. Step 2: Convert to fraction form
    78,110.85/107,792.76 = 42,300.85/x
  3. Step 3: Cross multiply
    78,110.85x = 107,792.76 × 42,300.85
  4. Step 4: Simplify right side
    78,110.85x = 4,559,725,371.85
  5. Step 5: Solve for x
    x = 4,559,725,371.85/78,110.85
  6. Step 6: Final answer
    x = 58,375.06

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1.5x scale

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.