Home / 90,842.47-136,281.93-31,662.25

Finding the Fourth Proportional to 90,842.47, 136,281.93 and 31,662.25

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Solution

The fourth proportional to 90,842.47, 136,281.93 and 31,662.25 is: 47,499.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,842.47 : 136,281.93 = 31,662.25 : x
  2. Step 2: Convert to fraction form
    90,842.47/136,281.93 = 31,662.25/x
  3. Step 3: Cross multiply
    90,842.47x = 136,281.93 × 31,662.25
  4. Step 4: Simplify right side
    90,842.47x = 4,314,992,538.14
  5. Step 5: Solve for x
    x = 4,314,992,538.14/90,842.47
  6. Step 6: Final answer
    x = 47,499.73

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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.