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Finding the Fourth Proportional to 68,563.30, 94,612.47 and 39,887.48

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Solution

The fourth proportional to 68,563.30, 94,612.47 and 39,887.48 is: 55,041.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,563.30 : 94,612.47 = 39,887.48 : x
  2. Step 2: Convert to fraction form
    68,563.30/94,612.47 = 39,887.48/x
  3. Step 3: Cross multiply
    68,563.30x = 94,612.47 × 39,887.48
  4. Step 4: Simplify right side
    68,563.30x = 3,773,852,382.24
  5. Step 5: Solve for x
    x = 3,773,852,382.24/68,563.30
  6. Step 6: Final answer
    x = 55,041.87

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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.