Home / 90,475.02-135,721.84-31,310.60

Finding the Fourth Proportional to 90,475.02, 135,721.84 and 31,310.60

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Solution

The fourth proportional to 90,475.02, 135,721.84 and 31,310.60 is: 46,969.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,475.02 : 135,721.84 = 31,310.60 : x
  2. Step 2: Convert to fraction form
    90,475.02/135,721.84 = 31,310.60/x
  3. Step 3: Cross multiply
    90,475.02x = 135,721.84 × 31,310.60
  4. Step 4: Simplify right side
    90,475.02x = 4,249,532,243.50
  5. Step 5: Solve for x
    x = 4,249,532,243.50/90,475.02
  6. Step 6: Final answer
    x = 46,969.12

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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.