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Finding the Fourth Proportional to 82,888.61, 124,369.65 and 43,436.34

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Solution

The fourth proportional to 82,888.61, 124,369.65 and 43,436.34 is: 65,173.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,888.61 : 124,369.65 = 43,436.34 : x
  2. Step 2: Convert to fraction form
    82,888.61/124,369.65 = 43,436.34/x
  3. Step 3: Cross multiply
    82,888.61x = 124,369.65 × 43,436.34
  4. Step 4: Simplify right side
    82,888.61x = 5,402,162,403.08
  5. Step 5: Solve for x
    x = 5,402,162,403.08/82,888.61
  6. Step 6: Final answer
    x = 65,173.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.