Home / 85,812.10-128,681.70-41,452.45

Finding the Fourth Proportional to 85,812.10, 128,681.70 and 41,452.45

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Solution

The fourth proportional to 85,812.10, 128,681.70 and 41,452.45 is: 62,161.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,812.10 : 128,681.70 = 41,452.45 : x
  2. Step 2: Convert to fraction form
    85,812.10/128,681.70 = 41,452.45/x
  3. Step 3: Cross multiply
    85,812.10x = 128,681.70 × 41,452.45
  4. Step 4: Simplify right side
    85,812.10x = 5,334,171,735.17
  5. Step 5: Solve for x
    x = 5,334,171,735.17/85,812.10
  6. Step 6: Final answer
    x = 62,161.07

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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.