Home / 51,807.09-77,691.60-18,518.13

Finding the Fourth Proportional to 51,807.09, 77,691.60 and 18,518.13

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Solution

The fourth proportional to 51,807.09, 77,691.60 and 18,518.13 is: 27,770.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,807.09 : 77,691.60 = 18,518.13 : x
  2. Step 2: Convert to fraction form
    51,807.09/77,691.60 = 18,518.13/x
  3. Step 3: Cross multiply
    51,807.09x = 77,691.60 × 18,518.13
  4. Step 4: Simplify right side
    51,807.09x = 1,438,703,148.71
  5. Step 5: Solve for x
    x = 1,438,703,148.71/51,807.09
  6. Step 6: Final answer
    x = 27,770.39

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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.