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Finding the Fourth Proportional to 61,145.88, 91,731.98 and 19,025.07

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Solution

The fourth proportional to 61,145.88, 91,731.98 and 19,025.07 is: 28,541.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,145.88 : 91,731.98 = 19,025.07 : x
  2. Step 2: Convert to fraction form
    61,145.88/91,731.98 = 19,025.07/x
  3. Step 3: Cross multiply
    61,145.88x = 91,731.98 × 19,025.07
  4. Step 4: Simplify right side
    61,145.88x = 1,745,207,340.74
  5. Step 5: Solve for x
    x = 1,745,207,340.74/61,145.88
  6. Step 6: Final answer
    x = 28,541.70

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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.