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Finding the Fourth Proportional to 68,406.74, 94,402.90 and 42,914.18

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Solution

The fourth proportional to 68,406.74, 94,402.90 and 42,914.18 is: 59,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,406.74 : 94,402.90 = 42,914.18 : x
  2. Step 2: Convert to fraction form
    68,406.74/94,402.90 = 42,914.18/x
  3. Step 3: Cross multiply
    68,406.74x = 94,402.90 × 42,914.18
  4. Step 4: Simplify right side
    68,406.74x = 4,051,223,043.12
  5. Step 5: Solve for x
    x = 4,051,223,043.12/68,406.74
  6. Step 6: Final answer
    x = 59,222.57

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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.