Home / 56,775.60-85,172.40-19,339.20

Finding the Fourth Proportional to 56,775.60, 85,172.40 and 19,339.20

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Solution

The fourth proportional to 56,775.60, 85,172.40 and 19,339.20 is: 29,011.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,775.60 : 85,172.40 = 19,339.20 : x
  2. Step 2: Convert to fraction form
    56,775.60/85,172.40 = 19,339.20/x
  3. Step 3: Cross multiply
    56,775.60x = 85,172.40 × 19,339.20
  4. Step 4: Simplify right side
    56,775.60x = 1,647,166,078.08
  5. Step 5: Solve for x
    x = 1,647,166,078.08/56,775.60
  6. Step 6: Final answer
    x = 29,011.87

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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.