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Finding the Fourth Proportional to 43,360.85, 65,040.27 and 19,987.29

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Solution

The fourth proportional to 43,360.85, 65,040.27 and 19,987.29 is: 29,980.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,360.85 : 65,040.27 = 19,987.29 : x
  2. Step 2: Convert to fraction form
    43,360.85/65,040.27 = 19,987.29/x
  3. Step 3: Cross multiply
    43,360.85x = 65,040.27 × 19,987.29
  4. Step 4: Simplify right side
    43,360.85x = 1,299,978,663.22
  5. Step 5: Solve for x
    x = 1,299,978,663.22/43,360.85
  6. Step 6: Final answer
    x = 29,980.47

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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.