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Finding the Fourth Proportional to 79,988.58, 110,369.79 and 45,989.10

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Solution

The fourth proportional to 79,988.58, 110,369.79 and 45,989.10 is: 63,456.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,988.58 : 110,369.79 = 45,989.10 : x
  2. Step 2: Convert to fraction form
    79,988.58/110,369.79 = 45,989.10/x
  3. Step 3: Cross multiply
    79,988.58x = 110,369.79 × 45,989.10
  4. Step 4: Simplify right side
    79,988.58x = 5,075,807,309.29
  5. Step 5: Solve for x
    x = 5,075,807,309.29/79,988.58
  6. Step 6: Final answer
    x = 63,456.65

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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.