Home / 81,458.30-112,294.67-57,185.35

Finding the Fourth Proportional to 81,458.30, 112,294.67 and 57,185.35

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Solution

The fourth proportional to 81,458.30, 112,294.67 and 57,185.35 is: 78,833.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,458.30 : 112,294.67 = 57,185.35 : x
  2. Step 2: Convert to fraction form
    81,458.30/112,294.67 = 57,185.35/x
  3. Step 3: Cross multiply
    81,458.30x = 112,294.67 × 57,185.35
  4. Step 4: Simplify right side
    81,458.30x = 6,421,609,440.42
  5. Step 5: Solve for x
    x = 6,421,609,440.42/81,458.30
  6. Step 6: Final answer
    x = 78,833.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.