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Finding the Fourth Proportional to 60,993.51, 91,467.51 and 21,001.20

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Solution

The fourth proportional to 60,993.51, 91,467.51 and 21,001.20 is: 31,493.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,993.51 : 91,467.51 = 21,001.20 : x
  2. Step 2: Convert to fraction form
    60,993.51/91,467.51 = 21,001.20/x
  3. Step 3: Cross multiply
    60,993.51x = 91,467.51 × 21,001.20
  4. Step 4: Simplify right side
    60,993.51x = 1,920,927,471.01
  5. Step 5: Solve for x
    x = 1,920,927,471.01/60,993.51
  6. Step 6: Final answer
    x = 31,493.97

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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.