Home / 78,022.20-107,670.66-42,212.19

Finding the Fourth Proportional to 78,022.20, 107,670.66 and 42,212.19

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Solution

The fourth proportional to 78,022.20, 107,670.66 and 42,212.19 is: 58,252.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022.20 : 107,670.66 = 42,212.19 : x
  2. Step 2: Convert to fraction form
    78,022.20/107,670.66 = 42,212.19/x
  3. Step 3: Cross multiply
    78,022.20x = 107,670.66 × 42,212.19
  4. Step 4: Simplify right side
    78,022.20x = 4,545,014,357.35
  5. Step 5: Solve for x
    x = 4,545,014,357.35/78,022.20
  6. Step 6: Final answer
    x = 58,252.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.