Home / 78,928.88-118,393.39-22,000.51

Finding the Fourth Proportional to 78,928.88, 118,393.39 and 22,000.51

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Solution

The fourth proportional to 78,928.88, 118,393.39 and 22,000.51 is: 33,000.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,928.88 : 118,393.39 = 22,000.51 : x
  2. Step 2: Convert to fraction form
    78,928.88/118,393.39 = 22,000.51/x
  3. Step 3: Cross multiply
    78,928.88x = 118,393.39 × 22,000.51
  4. Step 4: Simplify right side
    78,928.88x = 2,604,714,368.66
  5. Step 5: Solve for x
    x = 2,604,714,368.66/78,928.88
  6. Step 6: Final answer
    x = 33,000.78

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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.