Home / 78,358.07-117,434.43-36,232.80

Finding the Fourth Proportional to 78,358.07, 117,434.43 and 36,232.80

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Solution

The fourth proportional to 78,358.07, 117,434.43 and 36,232.80 is: 54,301.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,358.07 : 117,434.43 = 36,232.80 : x
  2. Step 2: Convert to fraction form
    78,358.07/117,434.43 = 36,232.80/x
  3. Step 3: Cross multiply
    78,358.07x = 117,434.43 × 36,232.80
  4. Step 4: Simplify right side
    78,358.07x = 4,254,978,215.30
  5. Step 5: Solve for x
    x = 4,254,978,215.30/78,358.07
  6. Step 6: Final answer
    x = 54,301.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.