Home / 85,188,555-127,731,685.86-39,072,656.52

Finding the Fourth Proportional to 85,188,555, 127,731,685.86 and 39,072,656.52

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Solution

The fourth proportional to 85,188,555, 127,731,685.86 and 39,072,656.52 is: 58,585,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,188,555 : 127,731,685.86 = 39,072,656.52 : x
  2. Step 2: Convert to fraction form
    85,188,555/127,731,685.86 = 39,072,656.52/x
  3. Step 3: Cross multiply
    85,188,555x = 127,731,685.86 × 39,072,656.52
  4. Step 4: Simplify right side
    85,188,555x = 4,990,816,288,328,321
  5. Step 5: Solve for x
    x = 4,990,816,288,328,321/85,188,555
  6. Step 6: Final answer
    x = 58,585,525.82

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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.