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Finding the Fourth Proportional to 81,366.35, 112,210.64 and 55,827.66

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Solution

The fourth proportional to 81,366.35, 112,210.64 and 55,827.66 is: 76,990.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,366.35 : 112,210.64 = 55,827.66 : x
  2. Step 2: Convert to fraction form
    81,366.35/112,210.64 = 55,827.66/x
  3. Step 3: Cross multiply
    81,366.35x = 112,210.64 × 55,827.66
  4. Step 4: Simplify right side
    81,366.35x = 6,264,457,019.55
  5. Step 5: Solve for x
    x = 6,264,457,019.55/81,366.35
  6. Step 6: Final answer
    x = 76,990.76

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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.