Home / 51,897.12-71,618.81-30,678.36

Finding the Fourth Proportional to 51,897.12, 71,618.81 and 30,678.36

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Solution

The fourth proportional to 51,897.12, 71,618.81 and 30,678.36 is: 42,336.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,897.12 : 71,618.81 = 30,678.36 : x
  2. Step 2: Convert to fraction form
    51,897.12/71,618.81 = 30,678.36/x
  3. Step 3: Cross multiply
    51,897.12x = 71,618.81 × 30,678.36
  4. Step 4: Simplify right side
    51,897.12x = 2,197,147,635.95
  5. Step 5: Solve for x
    x = 2,197,147,635.95/51,897.12
  6. Step 6: Final answer
    x = 42,336.60

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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.