Home / 90,828.60-136,255.05-31,682.40

Finding the Fourth Proportional to 90,828.60, 136,255.05 and 31,682.40

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Solution

The fourth proportional to 90,828.60, 136,255.05 and 31,682.40 is: 47,527.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,828.60 : 136,255.05 = 31,682.40 : x
  2. Step 2: Convert to fraction form
    90,828.60/136,255.05 = 31,682.40/x
  3. Step 3: Cross multiply
    90,828.60x = 136,255.05 × 31,682.40
  4. Step 4: Simplify right side
    90,828.60x = 4,316,886,996.12
  5. Step 5: Solve for x
    x = 4,316,886,996.12/90,828.60
  6. Step 6: Final answer
    x = 47,527.84

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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.