Home / 51,408.16-70,934-28,747.60

Finding the Fourth Proportional to 51,408.16, 70,934 and 28,747.60

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Solution

The fourth proportional to 51,408.16, 70,934 and 28,747.60 is: 39,666.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,408.16 : 70,934 = 28,747.60 : x
  2. Step 2: Convert to fraction form
    51,408.16/70,934 = 28,747.60/x
  3. Step 3: Cross multiply
    51,408.16x = 70,934 × 28,747.60
  4. Step 4: Simplify right side
    51,408.16x = 2,039,182,258.40
  5. Step 5: Solve for x
    x = 2,039,182,258.40/51,408.16
  6. Step 6: Final answer
    x = 39,666.51

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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.