Home / 91,638.12-137,461.74-28,501.26

Finding the Fourth Proportional to 91,638.12, 137,461.74 and 28,501.26

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Solution

The fourth proportional to 91,638.12, 137,461.74 and 28,501.26 is: 42,753.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,638.12 : 137,461.74 = 28,501.26 : x
  2. Step 2: Convert to fraction form
    91,638.12/137,461.74 = 28,501.26/x
  3. Step 3: Cross multiply
    91,638.12x = 137,461.74 × 28,501.26
  4. Step 4: Simplify right side
    91,638.12x = 3,917,832,791.79
  5. Step 5: Solve for x
    x = 3,917,832,791.79/91,638.12
  6. Step 6: Final answer
    x = 42,753.31

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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.