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Finding the Fourth Proportional to 85,486.77, 117,971.10 and 47,248.92

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Solution

The fourth proportional to 85,486.77, 117,971.10 and 47,248.92 is: 65,203.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,486.77 : 117,971.10 = 47,248.92 : x
  2. Step 2: Convert to fraction form
    85,486.77/117,971.10 = 47,248.92/x
  3. Step 3: Cross multiply
    85,486.77x = 117,971.10 × 47,248.92
  4. Step 4: Simplify right side
    85,486.77x = 5,574,007,066.21
  5. Step 5: Solve for x
    x = 5,574,007,066.21/85,486.77
  6. Step 6: Final answer
    x = 65,203.15

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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.