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Finding the Fourth Proportional to 84,070.88, 126,078.62 and 30,750.74

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Solution

The fourth proportional to 84,070.88, 126,078.62 and 30,750.74 is: 46,115.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,070.88 : 126,078.62 = 30,750.74 : x
  2. Step 2: Convert to fraction form
    84,070.88/126,078.62 = 30,750.74/x
  3. Step 3: Cross multiply
    84,070.88x = 126,078.62 × 30,750.74
  4. Step 4: Simplify right side
    84,070.88x = 3,877,010,079.03
  5. Step 5: Solve for x
    x = 3,877,010,079.03/84,070.88
  6. Step 6: Final answer
    x = 46,115.97

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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.