Home / 45,188.10-67,776.98-11,910.78

Finding the Fourth Proportional to 45,188.10, 67,776.98 and 11,910.78

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Solution

The fourth proportional to 45,188.10, 67,776.98 and 11,910.78 is: 17,864.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,188.10 : 67,776.98 = 11,910.78 : x
  2. Step 2: Convert to fraction form
    45,188.10/67,776.98 = 11,910.78/x
  3. Step 3: Cross multiply
    45,188.10x = 67,776.98 × 11,910.78
  4. Step 4: Simplify right side
    45,188.10x = 807,276,638.29
  5. Step 5: Solve for x
    x = 807,276,638.29/45,188.10
  6. Step 6: Final answer
    x = 17,864.81

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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.