Home / 91,122.90-136,694.08-38,537.70

Finding the Fourth Proportional to 91,122.90, 136,694.08 and 38,537.70

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Solution

The fourth proportional to 91,122.90, 136,694.08 and 38,537.70 is: 57,810.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,122.90 : 136,694.08 = 38,537.70 : x
  2. Step 2: Convert to fraction form
    91,122.90/136,694.08 = 38,537.70/x
  3. Step 3: Cross multiply
    91,122.90x = 136,694.08 × 38,537.70
  4. Step 4: Simplify right side
    91,122.90x = 5,267,875,446.82
  5. Step 5: Solve for x
    x = 5,267,875,446.82/91,122.90
  6. Step 6: Final answer
    x = 57,810.67

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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.