Home / 66,447,097.20-99,651,983.40-21,022,815.60

Finding the Fourth Proportional to 66,447,097.20, 99,651,983.40 and 21,022,815.60

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Solution

The fourth proportional to 66,447,097.20, 99,651,983.40 and 21,022,815.60 is: 31,528,318.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,447,097.20 : 99,651,983.40 = 21,022,815.60 : x
  2. Step 2: Convert to fraction form
    66,447,097.20/99,651,983.40 = 21,022,815.60/x
  3. Step 3: Cross multiply
    66,447,097.20x = 99,651,983.40 × 21,022,815.60
  4. Step 4: Simplify right side
    66,447,097.20x = 2,094,965,271,192,461.25
  5. Step 5: Solve for x
    x = 2,094,965,271,192,461.25/66,447,097.20
  6. Step 6: Final answer
    x = 31,528,318.91

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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.