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Finding the Fourth Proportional to 45,688.60, 68,532.90 and 43,720.30

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Solution

The fourth proportional to 45,688.60, 68,532.90 and 43,720.30 is: 65,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,688.60 : 68,532.90 = 43,720.30 : x
  2. Step 2: Convert to fraction form
    45,688.60/68,532.90 = 43,720.30/x
  3. Step 3: Cross multiply
    45,688.60x = 68,532.90 × 43,720.30
  4. Step 4: Simplify right side
    45,688.60x = 2,996,278,947.87
  5. Step 5: Solve for x
    x = 2,996,278,947.87/45,688.60
  6. Step 6: Final answer
    x = 65,580.45

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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.