Home / 85,015.13-127,527.95-25,855.16

Finding the Fourth Proportional to 85,015.13, 127,527.95 and 25,855.16

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Solution

The fourth proportional to 85,015.13, 127,527.95 and 25,855.16 is: 38,784.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,015.13 : 127,527.95 = 25,855.16 : x
  2. Step 2: Convert to fraction form
    85,015.13/127,527.95 = 25,855.16/x
  3. Step 3: Cross multiply
    85,015.13x = 127,527.95 × 25,855.16
  4. Step 4: Simplify right side
    85,015.13x = 3,297,254,978.72
  5. Step 5: Solve for x
    x = 3,297,254,978.72/85,015.13
  6. Step 6: Final answer
    x = 38,784.33

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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.