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Finding the Fourth Proportional to 89,627.40, 134,441.10 and 39,731.40

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Solution

The fourth proportional to 89,627.40, 134,441.10 and 39,731.40 is: 59,597.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,627.40 : 134,441.10 = 39,731.40 : x
  2. Step 2: Convert to fraction form
    89,627.40/134,441.10 = 39,731.40/x
  3. Step 3: Cross multiply
    89,627.40x = 134,441.10 × 39,731.40
  4. Step 4: Simplify right side
    89,627.40x = 5,341,533,120.54
  5. Step 5: Solve for x
    x = 5,341,533,120.54/89,627.40
  6. Step 6: Final answer
    x = 59,597.10

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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.