Home / 91,402.31-137,053.22-28,205.19

Finding the Fourth Proportional to 91,402.31, 137,053.22 and 28,205.19

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Solution

The fourth proportional to 91,402.31, 137,053.22 and 28,205.19 is: 42,292.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,402.31 : 137,053.22 = 28,205.19 : x
  2. Step 2: Convert to fraction form
    91,402.31/137,053.22 = 28,205.19/x
  3. Step 3: Cross multiply
    91,402.31x = 137,053.22 × 28,205.19
  4. Step 4: Simplify right side
    91,402.31x = 3,865,611,969.19
  5. Step 5: Solve for x
    x = 3,865,611,969.19/91,402.31
  6. Step 6: Final answer
    x = 42,292.28

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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.