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Finding the Fourth Proportional to 79,300.65, 109,436.40 and 43,488.51

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Solution

The fourth proportional to 79,300.65, 109,436.40 and 43,488.51 is: 60,014.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,300.65 : 109,436.40 = 43,488.51 : x
  2. Step 2: Convert to fraction form
    79,300.65/109,436.40 = 43,488.51/x
  3. Step 3: Cross multiply
    79,300.65x = 109,436.40 × 43,488.51
  4. Step 4: Simplify right side
    79,300.65x = 4,759,225,975.76
  5. Step 5: Solve for x
    x = 4,759,225,975.76/79,300.65
  6. Step 6: Final answer
    x = 60,014.97

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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.