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Finding the Fourth Proportional to 60,535.84, 90,819.12 and 18,983.20

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Solution

The fourth proportional to 60,535.84, 90,819.12 and 18,983.20 is: 28,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,535.84 : 90,819.12 = 18,983.20 : x
  2. Step 2: Convert to fraction form
    60,535.84/90,819.12 = 18,983.20/x
  3. Step 3: Cross multiply
    60,535.84x = 90,819.12 × 18,983.20
  4. Step 4: Simplify right side
    60,535.84x = 1,724,037,518.78
  5. Step 5: Solve for x
    x = 1,724,037,518.78/60,535.84
  6. Step 6: Final answer
    x = 28,479.62

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1.5x scale

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.