Home / 74,290.64-111,433.08-18,888.08

Finding the Fourth Proportional to 74,290.64, 111,433.08 and 18,888.08

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Solution

The fourth proportional to 74,290.64, 111,433.08 and 18,888.08 is: 28,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,290.64 : 111,433.08 = 18,888.08 : x
  2. Step 2: Convert to fraction form
    74,290.64/111,433.08 = 18,888.08/x
  3. Step 3: Cross multiply
    74,290.64x = 111,433.08 × 18,888.08
  4. Step 4: Simplify right side
    74,290.64x = 2,104,756,929.69
  5. Step 5: Solve for x
    x = 2,104,756,929.69/74,290.64
  6. Step 6: Final answer
    x = 28,331.39

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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.