Home / 52,503.22-78,723.15-20,918.15

Finding the Fourth Proportional to 52,503.22, 78,723.15 and 20,918.15

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Solution

The fourth proportional to 52,503.22, 78,723.15 and 20,918.15 is: 31,364.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,503.22 : 78,723.15 = 20,918.15 : x
  2. Step 2: Convert to fraction form
    52,503.22/78,723.15 = 20,918.15/x
  3. Step 3: Cross multiply
    52,503.22x = 78,723.15 × 20,918.15
  4. Step 4: Simplify right side
    52,503.22x = 1,646,742,266.56
  5. Step 5: Solve for x
    x = 1,646,742,266.56/52,503.22
  6. Step 6: Final answer
    x = 31,364.60

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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.