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Finding the Fourth Proportional to 112,885, 169,305.81 and 56,710.06

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Solution

The fourth proportional to 112,885, 169,305.81 and 56,710.06 is: 85,054.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,885 : 169,305.81 = 56,710.06 : x
  2. Step 2: Convert to fraction form
    112,885/169,305.81 = 56,710.06/x
  3. Step 3: Cross multiply
    112,885x = 169,305.81 × 56,710.06
  4. Step 4: Simplify right side
    112,885x = 9,601,342,643.45
  5. Step 5: Solve for x
    x = 9,601,342,643.45/112,885
  6. Step 6: Final answer
    x = 85,054.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.