Home / 85,661,480.40-128,229,780.60-47,205,272.40

Finding the Fourth Proportional to 85,661,480.40, 128,229,780.60 and 47,205,272.40

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Solution

The fourth proportional to 85,661,480.40, 128,229,780.60 and 47,205,272.40 is: 70,663,286.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,661,480.40 : 128,229,780.60 = 47,205,272.40 : x
  2. Step 2: Convert to fraction form
    85,661,480.40/128,229,780.60 = 47,205,272.40/x
  3. Step 3: Cross multiply
    85,661,480.40x = 128,229,780.60 × 47,205,272.40
  4. Step 4: Simplify right side
    85,661,480.40x = 6,053,121,723,015,235
  5. Step 5: Solve for x
    x = 6,053,121,723,015,235/85,661,480.40
  6. Step 6: Final answer
    x = 70,663,286.40

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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.