Home / 78,009.19-107,652.04-42,199.29

Finding the Fourth Proportional to 78,009.19, 107,652.04 and 42,199.29

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Solution

The fourth proportional to 78,009.19, 107,652.04 and 42,199.29 is: 58,234.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,009.19 : 107,652.04 = 42,199.29 : x
  2. Step 2: Convert to fraction form
    78,009.19/107,652.04 = 42,199.29/x
  3. Step 3: Cross multiply
    78,009.19x = 107,652.04 × 42,199.29
  4. Step 4: Simplify right side
    78,009.19x = 4,542,839,549.55
  5. Step 5: Solve for x
    x = 4,542,839,549.55/78,009.19
  6. Step 6: Final answer
    x = 58,234.67

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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.