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Finding the Fourth Proportional to 43,008.60, 64,512.90 and 38,861.40

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Solution

The fourth proportional to 43,008.60, 64,512.90 and 38,861.40 is: 58,292.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,008.60 : 64,512.90 = 38,861.40 : x
  2. Step 2: Convert to fraction form
    43,008.60/64,512.90 = 38,861.40/x
  3. Step 3: Cross multiply
    43,008.60x = 64,512.90 × 38,861.40
  4. Step 4: Simplify right side
    43,008.60x = 2,507,061,612.06
  5. Step 5: Solve for x
    x = 2,507,061,612.06/43,008.60
  6. Step 6: Final answer
    x = 58,292.10

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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.