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Finding the Fourth Proportional to 83,980.68, 126,001.71 and 39,022.80

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Solution

The fourth proportional to 83,980.68, 126,001.71 and 39,022.80 is: 58,548.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,980.68 : 126,001.71 = 39,022.80 : x
  2. Step 2: Convert to fraction form
    83,980.68/126,001.71 = 39,022.80/x
  3. Step 3: Cross multiply
    83,980.68x = 126,001.71 × 39,022.80
  4. Step 4: Simplify right side
    83,980.68x = 4,916,939,528.99
  5. Step 5: Solve for x
    x = 4,916,939,528.99/83,980.68
  6. Step 6: Final answer
    x = 58,548.46

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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.