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Finding the Fourth Proportional to 82,893.60, 124,340.40 and 20,564.10

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Solution

The fourth proportional to 82,893.60, 124,340.40 and 20,564.10 is: 30,846.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,893.60 : 124,340.40 = 20,564.10 : x
  2. Step 2: Convert to fraction form
    82,893.60/124,340.40 = 20,564.10/x
  3. Step 3: Cross multiply
    82,893.60x = 124,340.40 × 20,564.10
  4. Step 4: Simplify right side
    82,893.60x = 2,556,948,419.64
  5. Step 5: Solve for x
    x = 2,556,948,419.64/82,893.60
  6. Step 6: Final answer
    x = 30,846.15

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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.