Home / 52,015.20-77,890.80-28,615.20

Finding the Fourth Proportional to 52,015.20, 77,890.80 and 28,615.20

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Solution

The fourth proportional to 52,015.20, 77,890.80 and 28,615.20 is: 42,850.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,015.20 : 77,890.80 = 28,615.20 : x
  2. Step 2: Convert to fraction form
    52,015.20/77,890.80 = 28,615.20/x
  3. Step 3: Cross multiply
    52,015.20x = 77,890.80 × 28,615.20
  4. Step 4: Simplify right side
    52,015.20x = 2,228,860,820.16
  5. Step 5: Solve for x
    x = 2,228,860,820.16/52,015.20
  6. Step 6: Final answer
    x = 42,850.18

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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.