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Finding the Fourth Proportional to 79,381.35, 109,547.51 and 43,574.63

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Solution

The fourth proportional to 79,381.35, 109,547.51 and 43,574.63 is: 60,133.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,381.35 : 109,547.51 = 43,574.63 : x
  2. Step 2: Convert to fraction form
    79,381.35/109,547.51 = 43,574.63/x
  3. Step 3: Cross multiply
    79,381.35x = 109,547.51 × 43,574.63
  4. Step 4: Simplify right side
    79,381.35x = 4,773,491,450.06
  5. Step 5: Solve for x
    x = 4,773,491,450.06/79,381.35
  6. Step 6: Final answer
    x = 60,133.66

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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.