Home / 42,279.90-63,420.48-20,095.56

Finding the Fourth Proportional to 42,279.90, 63,420.48 and 20,095.56

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Solution

The fourth proportional to 42,279.90, 63,420.48 and 20,095.56 is: 30,143.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,279.90 : 63,420.48 = 20,095.56 : x
  2. Step 2: Convert to fraction form
    42,279.90/63,420.48 = 20,095.56/x
  3. Step 3: Cross multiply
    42,279.90x = 63,420.48 × 20,095.56
  4. Step 4: Simplify right side
    42,279.90x = 1,274,470,061.07
  5. Step 5: Solve for x
    x = 1,274,470,061.07/42,279.90
  6. Step 6: Final answer
    x = 30,143.64

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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.