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Finding the Fourth Proportional to 68,405.62, 94,401.30 and 42,913.06

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Solution

The fourth proportional to 68,405.62, 94,401.30 and 42,913.06 is: 59,220.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,405.62 : 94,401.30 = 42,913.06 : x
  2. Step 2: Convert to fraction form
    68,405.62/94,401.30 = 42,913.06/x
  3. Step 3: Cross multiply
    68,405.62x = 94,401.30 × 42,913.06
  4. Step 4: Simplify right side
    68,405.62x = 4,051,048,650.98
  5. Step 5: Solve for x
    x = 4,051,048,650.98/68,405.62
  6. Step 6: Final answer
    x = 59,220.99

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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.