Home / 80,739.51-121,111.58-21,575.26

Finding the Fourth Proportional to 80,739.51, 121,111.58 and 21,575.26

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Solution

The fourth proportional to 80,739.51, 121,111.58 and 21,575.26 is: 32,363.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,739.51 : 121,111.58 = 21,575.26 : x
  2. Step 2: Convert to fraction form
    80,739.51/121,111.58 = 21,575.26/x
  3. Step 3: Cross multiply
    80,739.51x = 121,111.58 × 21,575.26
  4. Step 4: Simplify right side
    80,739.51x = 2,613,013,827.51
  5. Step 5: Solve for x
    x = 2,613,013,827.51/80,739.51
  6. Step 6: Final answer
    x = 32,363.51

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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.