Home / 42,518.06-63,778.12-20,333.78

Finding the Fourth Proportional to 42,518.06, 63,778.12 and 20,333.78

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Solution

The fourth proportional to 42,518.06, 63,778.12 and 20,333.78 is: 30,501.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,518.06 : 63,778.12 = 20,333.78 : x
  2. Step 2: Convert to fraction form
    42,518.06/63,778.12 = 20,333.78/x
  3. Step 3: Cross multiply
    42,518.06x = 63,778.12 × 20,333.78
  4. Step 4: Simplify right side
    42,518.06x = 1,296,850,260.89
  5. Step 5: Solve for x
    x = 1,296,850,260.89/42,518.06
  6. Step 6: Final answer
    x = 30,501.16

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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.