Home / 52,290.96-78,446.16-21,148.08

Finding the Fourth Proportional to 52,290.96, 78,446.16 and 21,148.08

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Solution

The fourth proportional to 52,290.96, 78,446.16 and 21,148.08 is: 31,726.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,290.96 : 78,446.16 = 21,148.08 : x
  2. Step 2: Convert to fraction form
    52,290.96/78,446.16 = 21,148.08/x
  3. Step 3: Cross multiply
    52,290.96x = 78,446.16 × 21,148.08
  4. Step 4: Simplify right side
    52,290.96x = 1,658,985,667.37
  5. Step 5: Solve for x
    x = 1,658,985,667.37/52,290.96
  6. Step 6: Final answer
    x = 31,726.05

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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.