Home / 85,778.58-128,693.92-41,397.06

Finding the Fourth Proportional to 85,778.58, 128,693.92 and 41,397.06

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Solution

The fourth proportional to 85,778.58, 128,693.92 and 41,397.06 is: 62,108.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,778.58 : 128,693.92 = 41,397.06 : x
  2. Step 2: Convert to fraction form
    85,778.58/128,693.92 = 41,397.06/x
  3. Step 3: Cross multiply
    85,778.58x = 128,693.92 × 41,397.06
  4. Step 4: Simplify right side
    85,778.58x = 5,327,549,927.88
  5. Step 5: Solve for x
    x = 5,327,549,927.88/85,778.58
  6. Step 6: Final answer
    x = 62,108.16

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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.