Home / 85,255,999.80-127,902,662.10-42,145,855.80

Finding the Fourth Proportional to 85,255,999.80, 127,902,662.10 and 42,145,855.80

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Solution

The fourth proportional to 85,255,999.80, 127,902,662.10 and 42,145,855.80 is: 63,228,009.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,255,999.80 : 127,902,662.10 = 42,145,855.80 : x
  2. Step 2: Convert to fraction form
    85,255,999.80/127,902,662.10 = 42,145,855.80/x
  3. Step 3: Cross multiply
    85,255,999.80x = 127,902,662.10 × 42,145,855.80
  4. Step 4: Simplify right side
    85,255,999.80x = 5,390,567,153,302,725
  5. Step 5: Solve for x
    x = 5,390,567,153,302,725/85,255,999.80
  6. Step 6: Final answer
    x = 63,228,009.36

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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.