Home / 78,323.50-108,175.53-53,129.26

Finding the Fourth Proportional to 78,323.50, 108,175.53 and 53,129.26

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Solution

The fourth proportional to 78,323.50, 108,175.53 and 53,129.26 is: 73,378.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,323.50 : 108,175.53 = 53,129.26 : x
  2. Step 2: Convert to fraction form
    78,323.50/108,175.53 = 53,129.26/x
  3. Step 3: Cross multiply
    78,323.50x = 108,175.53 × 53,129.26
  4. Step 4: Simplify right side
    78,323.50x = 5,747,285,859.01
  5. Step 5: Solve for x
    x = 5,747,285,859.01/78,323.50
  6. Step 6: Final answer
    x = 73,378.82

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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.