Home / 56,878.18-85,317.84-21,809.50

Finding the Fourth Proportional to 56,878.18, 85,317.84 and 21,809.50

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Solution

The fourth proportional to 56,878.18, 85,317.84 and 21,809.50 is: 32,714.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,878.18 : 85,317.84 = 21,809.50 : x
  2. Step 2: Convert to fraction form
    56,878.18/85,317.84 = 21,809.50/x
  3. Step 3: Cross multiply
    56,878.18x = 85,317.84 × 21,809.50
  4. Step 4: Simplify right side
    56,878.18x = 1,860,739,431.48
  5. Step 5: Solve for x
    x = 1,860,739,431.48/56,878.18
  6. Step 6: Final answer
    x = 32,714.47

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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.