Home / 71,403.36-107,107.77-21,490.55

Finding the Fourth Proportional to 71,403.36, 107,107.77 and 21,490.55

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Solution

The fourth proportional to 71,403.36, 107,107.77 and 21,490.55 is: 32,236.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,403.36 : 107,107.77 = 21,490.55 : x
  2. Step 2: Convert to fraction form
    71,403.36/107,107.77 = 21,490.55/x
  3. Step 3: Cross multiply
    71,403.36x = 107,107.77 × 21,490.55
  4. Step 4: Simplify right side
    71,403.36x = 2,301,804,886.57
  5. Step 5: Solve for x
    x = 2,301,804,886.57/71,403.36
  6. Step 6: Final answer
    x = 32,236.65

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1.5x scale

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.