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Finding the Fourth Proportional to 45,603.91, 68,416.40 and 14,439.16

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Solution

The fourth proportional to 45,603.91, 68,416.40 and 14,439.16 is: 21,662.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,603.91 : 68,416.40 = 14,439.16 : x
  2. Step 2: Convert to fraction form
    45,603.91/68,416.40 = 14,439.16/x
  3. Step 3: Cross multiply
    45,603.91x = 68,416.40 × 14,439.16
  4. Step 4: Simplify right side
    45,603.91x = 987,874,931.95
  5. Step 5: Solve for x
    x = 987,874,931.95/45,603.91
  6. Step 6: Final answer
    x = 21,662.07

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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.