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Finding the Fourth Proportional to 89,859.56, 134,750.26 and 47,730.40

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Solution

The fourth proportional to 89,859.56, 134,750.26 and 47,730.40 is: 71,574.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,859.56 : 134,750.26 = 47,730.40 : x
  2. Step 2: Convert to fraction form
    89,859.56/134,750.26 = 47,730.40/x
  3. Step 3: Cross multiply
    89,859.56x = 134,750.26 × 47,730.40
  4. Step 4: Simplify right side
    89,859.56x = 6,431,683,809.90
  5. Step 5: Solve for x
    x = 6,431,683,809.90/89,859.56
  6. Step 6: Final answer
    x = 71,574.84

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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.