Home / 55,156.98-82,740.40-21,422.20

Finding the Fourth Proportional to 55,156.98, 82,740.40 and 21,422.20

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Solution

The fourth proportional to 55,156.98, 82,740.40 and 21,422.20 is: 32,135.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,156.98 : 82,740.40 = 21,422.20 : x
  2. Step 2: Convert to fraction form
    55,156.98/82,740.40 = 21,422.20/x
  3. Step 3: Cross multiply
    55,156.98x = 82,740.40 × 21,422.20
  4. Step 4: Simplify right side
    55,156.98x = 1,772,481,216.81
  5. Step 5: Solve for x
    x = 1,772,481,216.81/55,156.98
  6. Step 6: Final answer
    x = 32,135.21

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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.