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Finding the Fourth Proportional to 55,215.60, 82,837.20 and 17,779.20

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Solution

The fourth proportional to 55,215.60, 82,837.20 and 17,779.20 is: 26,673.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,215.60 : 82,837.20 = 17,779.20 : x
  2. Step 2: Convert to fraction form
    55,215.60/82,837.20 = 17,779.20/x
  3. Step 3: Cross multiply
    55,215.60x = 82,837.20 × 17,779.20
  4. Step 4: Simplify right side
    55,215.60x = 1,472,779,146.24
  5. Step 5: Solve for x
    x = 1,472,779,146.24/55,215.60
  6. Step 6: Final answer
    x = 26,673.24

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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.