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Finding the Fourth Proportional to 84,945.16, 117,230.10 and 47,219.32

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Solution

The fourth proportional to 84,945.16, 117,230.10 and 47,219.32 is: 65,165.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,945.16 : 117,230.10 = 47,219.32 : x
  2. Step 2: Convert to fraction form
    84,945.16/117,230.10 = 47,219.32/x
  3. Step 3: Cross multiply
    84,945.16x = 117,230.10 × 47,219.32
  4. Step 4: Simplify right side
    84,945.16x = 5,535,525,605.53
  5. Step 5: Solve for x
    x = 5,535,525,605.53/84,945.16
  6. Step 6: Final answer
    x = 65,165.87

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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.