Home / 85,221.51-117,605.79-51,230.36

Finding the Fourth Proportional to 85,221.51, 117,605.79 and 51,230.36

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Solution

The fourth proportional to 85,221.51, 117,605.79 and 51,230.36 is: 70,697.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,221.51 : 117,605.79 = 51,230.36 : x
  2. Step 2: Convert to fraction form
    85,221.51/117,605.79 = 51,230.36/x
  3. Step 3: Cross multiply
    85,221.51x = 117,605.79 × 51,230.36
  4. Step 4: Simplify right side
    85,221.51x = 6,024,986,959.78
  5. Step 5: Solve for x
    x = 6,024,986,959.78/85,221.51
  6. Step 6: Final answer
    x = 70,697.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.