Home / 77,817.40-107,368.50-43,819

Finding the Fourth Proportional to 77,817.40, 107,368.50 and 43,819

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Solution

The fourth proportional to 77,817.40, 107,368.50 and 43,819 is: 60,459.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,817.40 : 107,368.50 = 43,819 : x
  2. Step 2: Convert to fraction form
    77,817.40/107,368.50 = 43,819/x
  3. Step 3: Cross multiply
    77,817.40x = 107,368.50 × 43,819
  4. Step 4: Simplify right side
    77,817.40x = 4,704,780,301.50
  5. Step 5: Solve for x
    x = 4,704,780,301.50/77,817.40
  6. Step 6: Final answer
    x = 60,459.23

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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.