Home / 78,191.10-107,874.59-51,348.51

Finding the Fourth Proportional to 78,191.10, 107,874.59 and 51,348.51

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Solution

The fourth proportional to 78,191.10, 107,874.59 and 51,348.51 is: 70,841.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,191.10 : 107,874.59 = 51,348.51 : x
  2. Step 2: Convert to fraction form
    78,191.10/107,874.59 = 51,348.51/x
  3. Step 3: Cross multiply
    78,191.10x = 107,874.59 × 51,348.51
  4. Step 4: Simplify right side
    78,191.10x = 5,539,199,206.62
  5. Step 5: Solve for x
    x = 5,539,199,206.62/78,191.10
  6. Step 6: Final answer
    x = 70,841.81

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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.