Home / 77,026.10-115,481.55-42,005.30

Finding the Fourth Proportional to 77,026.10, 115,481.55 and 42,005.30

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Solution

The fourth proportional to 77,026.10, 115,481.55 and 42,005.30 is: 62,976.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,026.10 : 115,481.55 = 42,005.30 : x
  2. Step 2: Convert to fraction form
    77,026.10/115,481.55 = 42,005.30/x
  3. Step 3: Cross multiply
    77,026.10x = 115,481.55 × 42,005.30
  4. Step 4: Simplify right side
    77,026.10x = 4,850,837,152.22
  5. Step 5: Solve for x
    x = 4,850,837,152.22/77,026.10
  6. Step 6: Final answer
    x = 62,976.54

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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.