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Finding the Fourth Proportional to 66,045.61, 91,142.93 and 37,751.90

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Solution

The fourth proportional to 66,045.61, 91,142.93 and 37,751.90 is: 52,097.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,045.61 : 91,142.93 = 37,751.90 : x
  2. Step 2: Convert to fraction form
    66,045.61/91,142.93 = 37,751.90/x
  3. Step 3: Cross multiply
    66,045.61x = 91,142.93 × 37,751.90
  4. Step 4: Simplify right side
    66,045.61x = 3,440,818,590.31
  5. Step 5: Solve for x
    x = 3,440,818,590.31/66,045.61
  6. Step 6: Final answer
    x = 52,097.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.