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Finding the Fourth Proportional to 85,080.47, 117,411.80 and 47,354.72

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Solution

The fourth proportional to 85,080.47, 117,411.80 and 47,354.72 is: 65,349.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,080.47 : 117,411.80 = 47,354.72 : x
  2. Step 2: Convert to fraction form
    85,080.47/117,411.80 = 47,354.72/x
  3. Step 3: Cross multiply
    85,080.47x = 117,411.80 × 47,354.72
  4. Step 4: Simplify right side
    85,080.47x = 5,560,002,089.86
  5. Step 5: Solve for x
    x = 5,560,002,089.86/85,080.47
  6. Step 6: Final answer
    x = 65,349.93

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1.5x scale

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.