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Finding the Fourth Proportional to 91,324.71, 136,970.64 and 41,395.50

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Solution

The fourth proportional to 91,324.71, 136,970.64 and 41,395.50 is: 62,085.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,324.71 : 136,970.64 = 41,395.50 : x
  2. Step 2: Convert to fraction form
    91,324.71/136,970.64 = 41,395.50/x
  3. Step 3: Cross multiply
    91,324.71x = 136,970.64 × 41,395.50
  4. Step 4: Simplify right side
    91,324.71x = 5,669,968,128.12
  5. Step 5: Solve for x
    x = 5,669,968,128.12/91,324.71
  6. Step 6: Final answer
    x = 62,085.80

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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.