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Finding the Fourth Proportional to 43,542.57, 65,342.98 and 15,840.57

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Solution

The fourth proportional to 43,542.57, 65,342.98 and 15,840.57 is: 23,771.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,542.57 : 65,342.98 = 15,840.57 : x
  2. Step 2: Convert to fraction form
    43,542.57/65,342.98 = 15,840.57/x
  3. Step 3: Cross multiply
    43,542.57x = 65,342.98 × 15,840.57
  4. Step 4: Simplify right side
    43,542.57x = 1,035,070,048.70
  5. Step 5: Solve for x
    x = 1,035,070,048.70/43,542.57
  6. Step 6: Final answer
    x = 23,771.45

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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.