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Finding the Fourth Proportional to 68,391.21, 94,381.47 and 42,898.65

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Solution

The fourth proportional to 68,391.21, 94,381.47 and 42,898.65 is: 59,201.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,391.21 : 94,381.47 = 42,898.65 : x
  2. Step 2: Convert to fraction form
    68,391.21/94,381.47 = 42,898.65/x
  3. Step 3: Cross multiply
    68,391.21x = 94,381.47 × 42,898.65
  4. Step 4: Simplify right side
    68,391.21x = 4,048,837,433.52
  5. Step 5: Solve for x
    x = 4,048,837,433.52/68,391.21
  6. Step 6: Final answer
    x = 59,201.14

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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.