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Finding the Fourth Proportional to 65,007.40, 89,751.90 and 53,099.32

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Solution

The fourth proportional to 65,007.40, 89,751.90 and 53,099.32 is: 73,311.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,007.40 : 89,751.90 = 53,099.32 : x
  2. Step 2: Convert to fraction form
    65,007.40/89,751.90 = 53,099.32/x
  3. Step 3: Cross multiply
    65,007.40x = 89,751.90 × 53,099.32
  4. Step 4: Simplify right side
    65,007.40x = 4,765,764,858.71
  5. Step 5: Solve for x
    x = 4,765,764,858.71/65,007.40
  6. Step 6: Final answer
    x = 73,311.11

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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.