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Finding the Fourth Proportional to 68,405.74, 94,401.52 and 42,913.18

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Solution

The fourth proportional to 68,405.74, 94,401.52 and 42,913.18 is: 59,221.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,405.74 : 94,401.52 = 42,913.18 : x
  2. Step 2: Convert to fraction form
    68,405.74/94,401.52 = 42,913.18/x
  3. Step 3: Cross multiply
    68,405.74x = 94,401.52 × 42,913.18
  4. Step 4: Simplify right side
    68,405.74x = 4,051,069,420.03
  5. Step 5: Solve for x
    x = 4,051,069,420.03/68,405.74
  6. Step 6: Final answer
    x = 59,221.19

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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.