Home / 78,062.85-107,697.92-51,220.26

Finding the Fourth Proportional to 78,062.85, 107,697.92 and 51,220.26

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Solution

The fourth proportional to 78,062.85, 107,697.92 and 51,220.26 is: 70,665.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,062.85 : 107,697.92 = 51,220.26 : x
  2. Step 2: Convert to fraction form
    78,062.85/107,697.92 = 51,220.26/x
  3. Step 3: Cross multiply
    78,062.85x = 107,697.92 × 51,220.26
  4. Step 4: Simplify right side
    78,062.85x = 5,516,315,207.76
  5. Step 5: Solve for x
    x = 5,516,315,207.76/78,062.85
  6. Step 6: Final answer
    x = 70,665.05

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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.