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Finding the Fourth Proportional to 66,339.60, 99,509.40 and 45,344.40

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Solution

The fourth proportional to 66,339.60, 99,509.40 and 45,344.40 is: 68,016.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,339.60 : 99,509.40 = 45,344.40 : x
  2. Step 2: Convert to fraction form
    66,339.60/99,509.40 = 45,344.40/x
  3. Step 3: Cross multiply
    66,339.60x = 99,509.40 × 45,344.40
  4. Step 4: Simplify right side
    66,339.60x = 4,512,194,037.36
  5. Step 5: Solve for x
    x = 4,512,194,037.36/66,339.60
  6. Step 6: Final answer
    x = 68,016.60

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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.