Home / 85,021.45-127,548.57-47,623.75

Finding the Fourth Proportional to 85,021.45, 127,548.57 and 47,623.75

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Solution

The fourth proportional to 85,021.45, 127,548.57 and 47,623.75 is: 71,444.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,021.45 : 127,548.57 = 47,623.75 : x
  2. Step 2: Convert to fraction form
    85,021.45/127,548.57 = 47,623.75/x
  3. Step 3: Cross multiply
    85,021.45x = 127,548.57 × 47,623.75
  4. Step 4: Simplify right side
    85,021.45x = 6,074,341,070.26
  5. Step 5: Solve for x
    x = 6,074,341,070.26/85,021.45
  6. Step 6: Final answer
    x = 71,444.81

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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.