Home / 91,218.36-136,831.38-28,887.48

Finding the Fourth Proportional to 91,218.36, 136,831.38 and 28,887.48

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Solution

The fourth proportional to 91,218.36, 136,831.38 and 28,887.48 is: 43,332.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,218.36 : 136,831.38 = 28,887.48 : x
  2. Step 2: Convert to fraction form
    91,218.36/136,831.38 = 28,887.48/x
  3. Step 3: Cross multiply
    91,218.36x = 136,831.38 × 28,887.48
  4. Step 4: Simplify right side
    91,218.36x = 3,952,713,753.12
  5. Step 5: Solve for x
    x = 3,952,713,753.12/91,218.36
  6. Step 6: Final answer
    x = 43,332.44

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1.5x scale

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.