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Finding the Fourth Proportional to 85,117.63, 117,463.14 and 47,392.69

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Solution

The fourth proportional to 85,117.63, 117,463.14 and 47,392.69 is: 65,402.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,117.63 : 117,463.14 = 47,392.69 : x
  2. Step 2: Convert to fraction form
    85,117.63/117,463.14 = 47,392.69/x
  3. Step 3: Cross multiply
    85,117.63x = 117,463.14 × 47,392.69
  4. Step 4: Simplify right side
    85,117.63x = 5,566,893,593.13
  5. Step 5: Solve for x
    x = 5,566,893,593.13/85,117.63
  6. Step 6: Final answer
    x = 65,402.36

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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.