Home / 85,817.30-128,812.35-41,479.70

Finding the Fourth Proportional to 85,817.30, 128,812.35 and 41,479.70

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Solution

The fourth proportional to 85,817.30, 128,812.35 and 41,479.70 is: 62,261.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,817.30 : 128,812.35 = 41,479.70 : x
  2. Step 2: Convert to fraction form
    85,817.30/128,812.35 = 41,479.70/x
  3. Step 3: Cross multiply
    85,817.30x = 128,812.35 × 41,479.70
  4. Step 4: Simplify right side
    85,817.30x = 5,343,097,634.30
  5. Step 5: Solve for x
    x = 5,343,097,634.30/85,817.30
  6. Step 6: Final answer
    x = 62,261.31

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1.5x scale

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.