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Finding the Fourth Proportional to 70,353.68, 105,363 and 40,709.04

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Solution

The fourth proportional to 70,353.68, 105,363 and 40,709.04 is: 60,966.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,353.68 : 105,363 = 40,709.04 : x
  2. Step 2: Convert to fraction form
    70,353.68/105,363 = 40,709.04/x
  3. Step 3: Cross multiply
    70,353.68x = 105,363 × 40,709.04
  4. Step 4: Simplify right side
    70,353.68x = 4,289,226,581.52
  5. Step 5: Solve for x
    x = 4,289,226,581.52/70,353.68
  6. Step 6: Final answer
    x = 60,966.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.