Home / 91,035.09-136,552.43-31,887.68

Finding the Fourth Proportional to 91,035.09, 136,552.43 and 31,887.68

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Solution

The fourth proportional to 91,035.09, 136,552.43 and 31,887.68 is: 47,831.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,035.09 : 136,552.43 = 31,887.68 : x
  2. Step 2: Convert to fraction form
    91,035.09/136,552.43 = 31,887.68/x
  3. Step 3: Cross multiply
    91,035.09x = 136,552.43 × 31,887.68
  4. Step 4: Simplify right side
    91,035.09x = 4,354,339,588.02
  5. Step 5: Solve for x
    x = 4,354,339,588.02/91,035.09
  6. Step 6: Final answer
    x = 47,831.44

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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.