Home / 85,741.44-128,649.12-46,290.72

Finding the Fourth Proportional to 85,741.44, 128,649.12 and 46,290.72

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Solution

The fourth proportional to 85,741.44, 128,649.12 and 46,290.72 is: 69,456.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,741.44 : 128,649.12 = 46,290.72 : x
  2. Step 2: Convert to fraction form
    85,741.44/128,649.12 = 46,290.72/x
  3. Step 3: Cross multiply
    85,741.44x = 128,649.12 × 46,290.72
  4. Step 4: Simplify right side
    85,741.44x = 5,955,260,392.17
  5. Step 5: Solve for x
    x = 5,955,260,392.17/85,741.44
  6. Step 6: Final answer
    x = 69,456.03

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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.