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Finding the Fourth Proportional to 61,898.63, 92,849.18 and 20,345.63

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Solution

The fourth proportional to 61,898.63, 92,849.18 and 20,345.63 is: 30,518.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,898.63 : 92,849.18 = 20,345.63 : x
  2. Step 2: Convert to fraction form
    61,898.63/92,849.18 = 20,345.63/x
  3. Step 3: Cross multiply
    61,898.63x = 92,849.18 × 20,345.63
  4. Step 4: Simplify right side
    61,898.63x = 1,889,074,496.11
  5. Step 5: Solve for x
    x = 1,889,074,496.11/61,898.63
  6. Step 6: Final answer
    x = 30,518.84

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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.