Home / 76,388.24-105,416.91-42,398.93

Finding the Fourth Proportional to 76,388.24, 105,416.91 and 42,398.93

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Solution

The fourth proportional to 76,388.24, 105,416.91 and 42,398.93 is: 58,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,388.24 : 105,416.91 = 42,398.93 : x
  2. Step 2: Convert to fraction form
    76,388.24/105,416.91 = 42,398.93/x
  3. Step 3: Cross multiply
    76,388.24x = 105,416.91 × 42,398.93
  4. Step 4: Simplify right side
    76,388.24x = 4,469,563,660.82
  5. Step 5: Solve for x
    x = 4,469,563,660.82/76,388.24
  6. Step 6: Final answer
    x = 58,511.15

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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.