Home / 90,871.07-125,408.86-52,640.89

Finding the Fourth Proportional to 90,871.07, 125,408.86 and 52,640.89

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Solution

The fourth proportional to 90,871.07, 125,408.86 and 52,640.89 is: 72,648.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,871.07 : 125,408.86 = 52,640.89 : x
  2. Step 2: Convert to fraction form
    90,871.07/125,408.86 = 52,640.89/x
  3. Step 3: Cross multiply
    90,871.07x = 125,408.86 × 52,640.89
  4. Step 4: Simplify right side
    90,871.07x = 6,601,633,559.16
  5. Step 5: Solve for x
    x = 6,601,633,559.16/90,871.07
  6. Step 6: Final answer
    x = 72,648.36

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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.