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Finding the Fourth Proportional to 67,901.40, 93,715.20 and 39,607.10

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Solution

The fourth proportional to 67,901.40, 93,715.20 and 39,607.10 is: 54,664.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,901.40 : 93,715.20 = 39,607.10 : x
  2. Step 2: Convert to fraction form
    67,901.40/93,715.20 = 39,607.10/x
  3. Step 3: Cross multiply
    67,901.40x = 93,715.20 × 39,607.10
  4. Step 4: Simplify right side
    67,901.40x = 3,711,787,297.92
  5. Step 5: Solve for x
    x = 3,711,787,297.92/67,901.40
  6. Step 6: Final answer
    x = 54,664.37

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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.