Home / 90,831.99-136,204.24-31,666.35

Finding the Fourth Proportional to 90,831.99, 136,204.24 and 31,666.35

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Solution

The fourth proportional to 90,831.99, 136,204.24 and 31,666.35 is: 47,484.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,831.99 : 136,204.24 = 31,666.35 : x
  2. Step 2: Convert to fraction form
    90,831.99/136,204.24 = 31,666.35/x
  3. Step 3: Cross multiply
    90,831.99x = 136,204.24 × 31,666.35
  4. Step 4: Simplify right side
    90,831.99x = 4,313,091,135.32
  5. Step 5: Solve for x
    x = 4,313,091,135.32/90,831.99
  6. Step 6: Final answer
    x = 47,484.27

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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.