Home / 90,322.02-135,506.79-31,161.92

Finding the Fourth Proportional to 90,322.02, 135,506.79 and 31,161.92

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Solution

The fourth proportional to 90,322.02, 135,506.79 and 31,161.92 is: 46,751.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,322.02 : 135,506.79 = 31,161.92 : x
  2. Step 2: Convert to fraction form
    90,322.02/135,506.79 = 31,161.92/x
  3. Step 3: Cross multiply
    90,322.02x = 135,506.79 × 31,161.92
  4. Step 4: Simplify right side
    90,322.02x = 4,222,651,071.90
  5. Step 5: Solve for x
    x = 4,222,651,071.90/90,322.02
  6. Step 6: Final answer
    x = 46,751.07

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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.