Home / 85,215.42-127,778.36-37,809.98

Finding the Fourth Proportional to 85,215.42, 127,778.36 and 37,809.98

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Solution

The fourth proportional to 85,215.42, 127,778.36 and 37,809.98 is: 56,695.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,215.42 : 127,778.36 = 37,809.98 : x
  2. Step 2: Convert to fraction form
    85,215.42/127,778.36 = 37,809.98/x
  3. Step 3: Cross multiply
    85,215.42x = 127,778.36 × 37,809.98
  4. Step 4: Simplify right side
    85,215.42x = 4,831,296,408.09
  5. Step 5: Solve for x
    x = 4,831,296,408.09/85,215.42
  6. Step 6: Final answer
    x = 56,695.10

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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.