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Finding the Fourth Proportional to 89,707.82, 134,645.10 and 45,366.40

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Solution

The fourth proportional to 89,707.82, 134,645.10 and 45,366.40 is: 68,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,707.82 : 134,645.10 = 45,366.40 : x
  2. Step 2: Convert to fraction form
    89,707.82/134,645.10 = 45,366.40/x
  3. Step 3: Cross multiply
    89,707.82x = 134,645.10 × 45,366.40
  4. Step 4: Simplify right side
    89,707.82x = 6,108,362,960.63
  5. Step 5: Solve for x
    x = 6,108,362,960.63/89,707.82
  6. Step 6: Final answer
    x = 68,091.76

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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.