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Finding the Fourth Proportional to 79,237.80, 109,345.86 and 43,427.16

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Solution

The fourth proportional to 79,237.80, 109,345.86 and 43,427.16 is: 59,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,237.80 : 109,345.86 = 43,427.16 : x
  2. Step 2: Convert to fraction form
    79,237.80/109,345.86 = 43,427.16/x
  3. Step 3: Cross multiply
    79,237.80x = 109,345.86 × 43,427.16
  4. Step 4: Simplify right side
    79,237.80x = 4,748,580,157.56
  5. Step 5: Solve for x
    x = 4,748,580,157.56/79,237.80
  6. Step 6: Final answer
    x = 59,928.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.