Home / 90,639.67-135,988.55-37,356.60

Finding the Fourth Proportional to 90,639.67, 135,988.55 and 37,356.60

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Solution

The fourth proportional to 90,639.67, 135,988.55 and 37,356.60 is: 56,046.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,639.67 : 135,988.55 = 37,356.60 : x
  2. Step 2: Convert to fraction form
    90,639.67/135,988.55 = 37,356.60/x
  3. Step 3: Cross multiply
    90,639.67x = 135,988.55 × 37,356.60
  4. Step 4: Simplify right side
    90,639.67x = 5,080,069,866.93
  5. Step 5: Solve for x
    x = 5,080,069,866.93/90,639.67
  6. Step 6: Final answer
    x = 56,046.87

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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.