Home / 51,570.11-71,171.80-28,909.15

Finding the Fourth Proportional to 51,570.11, 71,171.80 and 28,909.15

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Solution

The fourth proportional to 51,570.11, 71,171.80 and 28,909.15 is: 39,897.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,570.11 : 71,171.80 = 28,909.15 : x
  2. Step 2: Convert to fraction form
    51,570.11/71,171.80 = 28,909.15/x
  3. Step 3: Cross multiply
    51,570.11x = 71,171.80 × 28,909.15
  4. Step 4: Simplify right side
    51,570.11x = 2,057,515,991.77
  5. Step 5: Solve for x
    x = 2,057,515,991.77/51,570.11
  6. Step 6: Final answer
    x = 39,897.45

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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.