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Finding the Fourth Proportional to 65,327.60, 97,991.40 and 18,574.40

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Solution

The fourth proportional to 65,327.60, 97,991.40 and 18,574.40 is: 27,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,327.60 : 97,991.40 = 18,574.40 : x
  2. Step 2: Convert to fraction form
    65,327.60/97,991.40 = 18,574.40/x
  3. Step 3: Cross multiply
    65,327.60x = 97,991.40 × 18,574.40
  4. Step 4: Simplify right side
    65,327.60x = 1,820,131,460.16
  5. Step 5: Solve for x
    x = 1,820,131,460.16/65,327.60
  6. Step 6: Final answer
    x = 27,861.60

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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.