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Finding the Fourth Proportional to 66,467.60, 99,701.40 and 60,477.20

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Solution

The fourth proportional to 66,467.60, 99,701.40 and 60,477.20 is: 90,715.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,467.60 : 99,701.40 = 60,477.20 : x
  2. Step 2: Convert to fraction form
    66,467.60/99,701.40 = 60,477.20/x
  3. Step 3: Cross multiply
    66,467.60x = 99,701.40 × 60,477.20
  4. Step 4: Simplify right side
    66,467.60x = 6,029,661,508.08
  5. Step 5: Solve for x
    x = 6,029,661,508.08/66,467.60
  6. Step 6: Final answer
    x = 90,715.80

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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.