Home / 52,219.29-78,330.47-12,776.40

Finding the Fourth Proportional to 52,219.29, 78,330.47 and 12,776.40

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Solution

The fourth proportional to 52,219.29, 78,330.47 and 12,776.40 is: 19,164.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,219.29 : 78,330.47 = 12,776.40 : x
  2. Step 2: Convert to fraction form
    52,219.29/78,330.47 = 12,776.40/x
  3. Step 3: Cross multiply
    52,219.29x = 78,330.47 × 12,776.40
  4. Step 4: Simplify right side
    52,219.29x = 1,000,781,353.03
  5. Step 5: Solve for x
    x = 1,000,781,353.03/52,219.29
  6. Step 6: Final answer
    x = 19,164.97

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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.