Home / 52,638.39-72,639.78-28,765.21

Finding the Fourth Proportional to 52,638.39, 72,639.78 and 28,765.21

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Solution

The fourth proportional to 52,638.39, 72,639.78 and 28,765.21 is: 39,695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,638.39 : 72,639.78 = 28,765.21 : x
  2. Step 2: Convert to fraction form
    52,638.39/72,639.78 = 28,765.21/x
  3. Step 3: Cross multiply
    52,638.39x = 72,639.78 × 28,765.21
  4. Step 4: Simplify right side
    52,638.39x = 2,089,498,344.45
  5. Step 5: Solve for x
    x = 2,089,498,344.45/52,638.39
  6. Step 6: Final answer
    x = 39,695.33

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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.