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Finding the Fourth Proportional to 85,148.80, 117,505.58 and 47,422.96

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Solution

The fourth proportional to 85,148.80, 117,505.58 and 47,422.96 is: 65,443.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,148.80 : 117,505.58 = 47,422.96 : x
  2. Step 2: Convert to fraction form
    85,148.80/117,505.58 = 47,422.96/x
  3. Step 3: Cross multiply
    85,148.80x = 117,505.58 × 47,422.96
  4. Step 4: Simplify right side
    85,148.80x = 5,572,462,420.12
  5. Step 5: Solve for x
    x = 5,572,462,420.12/85,148.80
  6. Step 6: Final answer
    x = 65,443.82

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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.