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Finding the Fourth Proportional to 79,088.48, 109,142.08 and 43,278.48

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Solution

The fourth proportional to 79,088.48, 109,142.08 and 43,278.48 is: 59,724.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,088.48 : 109,142.08 = 43,278.48 : x
  2. Step 2: Convert to fraction form
    79,088.48/109,142.08 = 43,278.48/x
  3. Step 3: Cross multiply
    79,088.48x = 109,142.08 × 43,278.48
  4. Step 4: Simplify right side
    79,088.48x = 4,723,502,564.34
  5. Step 5: Solve for x
    x = 4,723,502,564.34/79,088.48
  6. Step 6: Final answer
    x = 59,724.28

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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.