Home / 52,619.60-78,862.20-21,419.60

Finding the Fourth Proportional to 52,619.60, 78,862.20 and 21,419.60

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Solution

The fourth proportional to 52,619.60, 78,862.20 and 21,419.60 is: 32,102.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,619.60 : 78,862.20 = 21,419.60 : x
  2. Step 2: Convert to fraction form
    52,619.60/78,862.20 = 21,419.60/x
  3. Step 3: Cross multiply
    52,619.60x = 78,862.20 × 21,419.60
  4. Step 4: Simplify right side
    52,619.60x = 1,689,196,779.12
  5. Step 5: Solve for x
    x = 1,689,196,779.12/52,619.60
  6. Step 6: Final answer
    x = 32,102.05

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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.