Home / 90,031.32-124,242.70-49,745.09

Finding the Fourth Proportional to 90,031.32, 124,242.70 and 49,745.09

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Solution

The fourth proportional to 90,031.32, 124,242.70 and 49,745.09 is: 68,647.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,031.32 : 124,242.70 = 49,745.09 : x
  2. Step 2: Convert to fraction form
    90,031.32/124,242.70 = 49,745.09/x
  3. Step 3: Cross multiply
    90,031.32x = 124,242.70 × 49,745.09
  4. Step 4: Simplify right side
    90,031.32x = 6,180,464,293.34
  5. Step 5: Solve for x
    x = 6,180,464,293.34/90,031.32
  6. Step 6: Final answer
    x = 68,647.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.