Home / 28,779.80-43,113.20-25,645.10

Finding the Fourth Proportional to 28,779.80, 43,113.20 and 25,645.10

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Solution

The fourth proportional to 28,779.80, 43,113.20 and 25,645.10 is: 38,417.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,779.80 : 43,113.20 = 25,645.10 : x
  2. Step 2: Convert to fraction form
    28,779.80/43,113.20 = 25,645.10/x
  3. Step 3: Cross multiply
    28,779.80x = 43,113.20 × 25,645.10
  4. Step 4: Simplify right side
    28,779.80x = 1,105,642,325.32
  5. Step 5: Solve for x
    x = 1,105,642,325.32/28,779.80
  6. Step 6: Final answer
    x = 38,417.30

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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.