Home / 56,918.10-85,387.86-21,855.06

Finding the Fourth Proportional to 56,918.10, 85,387.86 and 21,855.06

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Solution

The fourth proportional to 56,918.10, 85,387.86 and 21,855.06 is: 32,786.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,918.10 : 85,387.86 = 21,855.06 : x
  2. Step 2: Convert to fraction form
    56,918.10/85,387.86 = 21,855.06/x
  3. Step 3: Cross multiply
    56,918.10x = 85,387.86 × 21,855.06
  4. Step 4: Simplify right side
    56,918.10x = 1,866,156,803.57
  5. Step 5: Solve for x
    x = 1,866,156,803.57/56,918.10
  6. Step 6: Final answer
    x = 32,786.70

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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.