Home / 85,253,272.80-127,879,909.20-31,393,586.40

Finding the Fourth Proportional to 85,253,272.80, 127,879,909.20 and 31,393,586.40

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Solution

The fourth proportional to 85,253,272.80, 127,879,909.20 and 31,393,586.40 is: 47,090,379.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,253,272.80 : 127,879,909.20 = 31,393,586.40 : x
  2. Step 2: Convert to fraction form
    85,253,272.80/127,879,909.20 = 31,393,586.40/x
  3. Step 3: Cross multiply
    85,253,272.80x = 127,879,909.20 × 31,393,586.40
  4. Step 4: Simplify right side
    85,253,272.80x = 4,014,608,978,294,355
  5. Step 5: Solve for x
    x = 4,014,608,978,294,355/85,253,272.80
  6. Step 6: Final answer
    x = 47,090,379.60

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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.