Home / 54,690.02-82,041.86-21,405.78

Finding the Fourth Proportional to 54,690.02, 82,041.86 and 21,405.78

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Solution

The fourth proportional to 54,690.02, 82,041.86 and 21,405.78 is: 32,111.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,690.02 : 82,041.86 = 21,405.78 : x
  2. Step 2: Convert to fraction form
    54,690.02/82,041.86 = 21,405.78/x
  3. Step 3: Cross multiply
    54,690.02x = 82,041.86 × 21,405.78
  4. Step 4: Simplify right side
    54,690.02x = 1,756,170,005.95
  5. Step 5: Solve for x
    x = 1,756,170,005.95/54,690.02
  6. Step 6: Final answer
    x = 32,111.34

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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.