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Finding the Fourth Proportional to 68,374.94, 94,366.07 and 39,688.46

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Solution

The fourth proportional to 68,374.94, 94,366.07 and 39,688.46 is: 54,775.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,374.94 : 94,366.07 = 39,688.46 : x
  2. Step 2: Convert to fraction form
    68,374.94/94,366.07 = 39,688.46/x
  3. Step 3: Cross multiply
    68,374.94x = 94,366.07 × 39,688.46
  4. Step 4: Simplify right side
    68,374.94x = 3,745,243,994.55
  5. Step 5: Solve for x
    x = 3,745,243,994.55/68,374.94
  6. Step 6: Final answer
    x = 54,775.10

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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.