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Finding the Fourth Proportional to 85,310.06, 117,730.42 and 47,583.50

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Solution

The fourth proportional to 85,310.06, 117,730.42 and 47,583.50 is: 65,666.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,310.06 : 117,730.42 = 47,583.50 : x
  2. Step 2: Convert to fraction form
    85,310.06/117,730.42 = 47,583.50/x
  3. Step 3: Cross multiply
    85,310.06x = 117,730.42 × 47,583.50
  4. Step 4: Simplify right side
    85,310.06x = 5,602,025,440.07
  5. Step 5: Solve for x
    x = 5,602,025,440.07/85,310.06
  6. Step 6: Final answer
    x = 65,666.65

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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.