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Finding the Fourth Proportional to 61,007.60, 91,333.20 and 43,511.60

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Solution

The fourth proportional to 61,007.60, 91,333.20 and 43,511.60 is: 65,140.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,007.60 : 91,333.20 = 43,511.60 : x
  2. Step 2: Convert to fraction form
    61,007.60/91,333.20 = 43,511.60/x
  3. Step 3: Cross multiply
    61,007.60x = 91,333.20 × 43,511.60
  4. Step 4: Simplify right side
    61,007.60x = 3,974,053,665.12
  5. Step 5: Solve for x
    x = 3,974,053,665.12/61,007.60
  6. Step 6: Final answer
    x = 65,140.30

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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.