Home / 42,135.48-63,178.77-19,948.67

Finding the Fourth Proportional to 42,135.48, 63,178.77 and 19,948.67

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Solution

The fourth proportional to 42,135.48, 63,178.77 and 19,948.67 is: 29,911.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,135.48 : 63,178.77 = 19,948.67 : x
  2. Step 2: Convert to fraction form
    42,135.48/63,178.77 = 19,948.67/x
  3. Step 3: Cross multiply
    42,135.48x = 63,178.77 × 19,948.67
  4. Step 4: Simplify right side
    42,135.48x = 1,260,332,317.36
  5. Step 5: Solve for x
    x = 1,260,332,317.36/42,135.48
  6. Step 6: Final answer
    x = 29,911.43

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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.