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Finding the Fourth Proportional to 34,688.80, 51,960.30 and 28,856.80

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Solution

The fourth proportional to 34,688.80, 51,960.30 and 28,856.80 is: 43,224.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,688.80 : 51,960.30 = 28,856.80 : x
  2. Step 2: Convert to fraction form
    34,688.80/51,960.30 = 28,856.80/x
  3. Step 3: Cross multiply
    34,688.80x = 51,960.30 × 28,856.80
  4. Step 4: Simplify right side
    34,688.80x = 1,499,407,985.04
  5. Step 5: Solve for x
    x = 1,499,407,985.04/34,688.80
  6. Step 6: Final answer
    x = 43,224.56

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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.