Home / 75,396.90-112,998.15-57,779.40

Finding the Fourth Proportional to 75,396.90, 112,998.15 and 57,779.40

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Solution

The fourth proportional to 75,396.90, 112,998.15 and 57,779.40 is: 86,594.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,396.90 : 112,998.15 = 57,779.40 : x
  2. Step 2: Convert to fraction form
    75,396.90/112,998.15 = 57,779.40/x
  3. Step 3: Cross multiply
    75,396.90x = 112,998.15 × 57,779.40
  4. Step 4: Simplify right side
    75,396.90x = 6,528,965,308.11
  5. Step 5: Solve for x
    x = 6,528,965,308.11/75,396.90
  6. Step 6: Final answer
    x = 86,594.61

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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.