Home / 85,919.22-128,929.86-46,475.46

Finding the Fourth Proportional to 85,919.22, 128,929.86 and 46,475.46

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Solution

The fourth proportional to 85,919.22, 128,929.86 and 46,475.46 is: 69,740.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,919.22 : 128,929.86 = 46,475.46 : x
  2. Step 2: Convert to fraction form
    85,919.22/128,929.86 = 46,475.46/x
  3. Step 3: Cross multiply
    85,919.22x = 128,929.86 × 46,475.46
  4. Step 4: Simplify right side
    85,919.22x = 5,992,074,551.24
  5. Step 5: Solve for x
    x = 5,992,074,551.24/85,919.22
  6. Step 6: Final answer
    x = 69,740.79

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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.