Home / 60,781.12-91,212.39-21,338.32

Finding the Fourth Proportional to 60,781.12, 91,212.39 and 21,338.32

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Solution

The fourth proportional to 60,781.12, 91,212.39 and 21,338.32 is: 32,021.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,781.12 : 91,212.39 = 21,338.32 : x
  2. Step 2: Convert to fraction form
    60,781.12/91,212.39 = 21,338.32/x
  3. Step 3: Cross multiply
    60,781.12x = 91,212.39 × 21,338.32
  4. Step 4: Simplify right side
    60,781.12x = 1,946,319,165.78
  5. Step 5: Solve for x
    x = 1,946,319,165.78/60,781.12
  6. Step 6: Final answer
    x = 32,021.77

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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.