Home / 85,875.10-128,776.20-41,515.45

Finding the Fourth Proportional to 85,875.10, 128,776.20 and 41,515.45

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Solution

The fourth proportional to 85,875.10, 128,776.20 and 41,515.45 is: 62,255.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,875.10 : 128,776.20 = 41,515.45 : x
  2. Step 2: Convert to fraction form
    85,875.10/128,776.20 = 41,515.45/x
  3. Step 3: Cross multiply
    85,875.10x = 128,776.20 × 41,515.45
  4. Step 4: Simplify right side
    85,875.10x = 5,346,201,892.29
  5. Step 5: Solve for x
    x = 5,346,201,892.29/85,875.10
  6. Step 6: Final answer
    x = 62,255.55

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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.