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Finding the Fourth Proportional to 66,564.40, 99,846.60 and 40,320.40

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Solution

The fourth proportional to 66,564.40, 99,846.60 and 40,320.40 is: 60,480.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,564.40 : 99,846.60 = 40,320.40 : x
  2. Step 2: Convert to fraction form
    66,564.40/99,846.60 = 40,320.40/x
  3. Step 3: Cross multiply
    66,564.40x = 99,846.60 × 40,320.40
  4. Step 4: Simplify right side
    66,564.40x = 4,025,854,850.64
  5. Step 5: Solve for x
    x = 4,025,854,850.64/66,564.40
  6. Step 6: Final answer
    x = 60,480.60

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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.