Home / 78,062.91-117,094.68-18,898.50

Finding the Fourth Proportional to 78,062.91, 117,094.68 and 18,898.50

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Solution

The fourth proportional to 78,062.91, 117,094.68 and 18,898.50 is: 28,347.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,062.91 : 117,094.68 = 18,898.50 : x
  2. Step 2: Convert to fraction form
    78,062.91/117,094.68 = 18,898.50/x
  3. Step 3: Cross multiply
    78,062.91x = 117,094.68 × 18,898.50
  4. Step 4: Simplify right side
    78,062.91x = 2,212,913,809.98
  5. Step 5: Solve for x
    x = 2,212,913,809.98/78,062.91
  6. Step 6: Final answer
    x = 28,347.83

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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.