Home / 45,368.47-68,052.82-13,778.78

Finding the Fourth Proportional to 45,368.47, 68,052.82 and 13,778.78

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Solution

The fourth proportional to 45,368.47, 68,052.82 and 13,778.78 is: 20,668.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,368.47 : 68,052.82 = 13,778.78 : x
  2. Step 2: Convert to fraction form
    45,368.47/68,052.82 = 13,778.78/x
  3. Step 3: Cross multiply
    45,368.47x = 68,052.82 × 13,778.78
  4. Step 4: Simplify right side
    45,368.47x = 937,684,494.90
  5. Step 5: Solve for x
    x = 937,684,494.90/45,368.47
  6. Step 6: Final answer
    x = 20,668.20

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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.