Home / 66,429,121.20-99,643,681.80-55,847,540.40

Finding the Fourth Proportional to 66,429,121.20, 99,643,681.80 and 55,847,540.40

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Solution

The fourth proportional to 66,429,121.20, 99,643,681.80 and 55,847,540.40 is: 83,771,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429,121.20 : 99,643,681.80 = 55,847,540.40 : x
  2. Step 2: Convert to fraction form
    66,429,121.20/99,643,681.80 = 55,847,540.40/x
  3. Step 3: Cross multiply
    66,429,121.20x = 99,643,681.80 × 55,847,540.40
  4. Step 4: Simplify right side
    66,429,121.20x = 5,564,854,544,930,244
  5. Step 5: Solve for x
    x = 5,564,854,544,930,244/66,429,121.20
  6. Step 6: Final answer
    x = 83,771,310.60

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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.