Home / 78,421.48-108,209.46-46,589.56

Finding the Fourth Proportional to 78,421.48, 108,209.46 and 46,589.56

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Solution

The fourth proportional to 78,421.48, 108,209.46 and 46,589.56 is: 64,286.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421.48 : 108,209.46 = 46,589.56 : x
  2. Step 2: Convert to fraction form
    78,421.48/108,209.46 = 46,589.56/x
  3. Step 3: Cross multiply
    78,421.48x = 108,209.46 × 46,589.56
  4. Step 4: Simplify right side
    78,421.48x = 5,041,431,129.24
  5. Step 5: Solve for x
    x = 5,041,431,129.24/78,421.48
  6. Step 6: Final answer
    x = 64,286.36

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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.