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Finding the Fourth Proportional to 64,881.18, 89,520.71 and 36,581.40

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Solution

The fourth proportional to 64,881.18, 89,520.71 and 36,581.40 is: 50,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,881.18 : 89,520.71 = 36,581.40 : x
  2. Step 2: Convert to fraction form
    64,881.18/89,520.71 = 36,581.40/x
  3. Step 3: Cross multiply
    64,881.18x = 89,520.71 × 36,581.40
  4. Step 4: Simplify right side
    64,881.18x = 3,274,792,900.79
  5. Step 5: Solve for x
    x = 3,274,792,900.79/64,881.18
  6. Step 6: Final answer
    x = 50,473.70

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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.