Home / 90,552.15-135,828.18-31,387.77

Finding the Fourth Proportional to 90,552.15, 135,828.18 and 31,387.77

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Solution

The fourth proportional to 90,552.15, 135,828.18 and 31,387.77 is: 47,081.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,552.15 : 135,828.18 = 31,387.77 : x
  2. Step 2: Convert to fraction form
    90,552.15/135,828.18 = 31,387.77/x
  3. Step 3: Cross multiply
    90,552.15x = 135,828.18 × 31,387.77
  4. Step 4: Simplify right side
    90,552.15x = 4,263,343,673.36
  5. Step 5: Solve for x
    x = 4,263,343,673.36/90,552.15
  6. Step 6: Final answer
    x = 47,081.64

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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.