Home / 48,518.80-72,778.20-18,937.60

Finding the Fourth Proportional to 48,518.80, 72,778.20 and 18,937.60

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Solution

The fourth proportional to 48,518.80, 72,778.20 and 18,937.60 is: 28,406.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,518.80 : 72,778.20 = 18,937.60 : x
  2. Step 2: Convert to fraction form
    48,518.80/72,778.20 = 18,937.60/x
  3. Step 3: Cross multiply
    48,518.80x = 72,778.20 × 18,937.60
  4. Step 4: Simplify right side
    48,518.80x = 1,378,244,440.32
  5. Step 5: Solve for x
    x = 1,378,244,440.32/48,518.80
  6. Step 6: Final answer
    x = 28,406.40

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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.