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Finding the Fourth Proportional to 81,264.16, 121,881.24 and 36,880.24

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Solution

The fourth proportional to 81,264.16, 121,881.24 and 36,880.24 is: 55,313.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,264.16 : 121,881.24 = 36,880.24 : x
  2. Step 2: Convert to fraction form
    81,264.16/121,881.24 = 36,880.24/x
  3. Step 3: Cross multiply
    81,264.16x = 121,881.24 × 36,880.24
  4. Step 4: Simplify right side
    81,264.16x = 4,495,009,382.70
  5. Step 5: Solve for x
    x = 4,495,009,382.70/81,264.16
  6. Step 6: Final answer
    x = 55,313.55

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1.5x scale

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.