Home / 76,826.08-115,085.40-61,057.72

Finding the Fourth Proportional to 76,826.08, 115,085.40 and 61,057.72

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Solution

The fourth proportional to 76,826.08, 115,085.40 and 61,057.72 is: 91,464.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,826.08 : 115,085.40 = 61,057.72 : x
  2. Step 2: Convert to fraction form
    76,826.08/115,085.40 = 61,057.72/x
  3. Step 3: Cross multiply
    76,826.08x = 115,085.40 × 61,057.72
  4. Step 4: Simplify right side
    76,826.08x = 7,026,852,129.29
  5. Step 5: Solve for x
    x = 7,026,852,129.29/76,826.08
  6. Step 6: Final answer
    x = 91,464.41

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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.