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Finding the Fourth Proportional to 91,586.47, 137,143.11 and 63,211

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Solution

The fourth proportional to 91,586.47, 137,143.11 and 63,211 is: 94,653.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,586.47 : 137,143.11 = 63,211 : x
  2. Step 2: Convert to fraction form
    91,586.47/137,143.11 = 63,211/x
  3. Step 3: Cross multiply
    91,586.47x = 137,143.11 × 63,211
  4. Step 4: Simplify right side
    91,586.47x = 8,668,953,126.21
  5. Step 5: Solve for x
    x = 8,668,953,126.21/91,586.47
  6. Step 6: Final answer
    x = 94,653.21

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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.