Home / 78,052.08-107,724-51,272.16

Finding the Fourth Proportional to 78,052.08, 107,724 and 51,272.16

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Solution

The fourth proportional to 78,052.08, 107,724 and 51,272.16 is: 70,763.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,052.08 : 107,724 = 51,272.16 : x
  2. Step 2: Convert to fraction form
    78,052.08/107,724 = 51,272.16/x
  3. Step 3: Cross multiply
    78,052.08x = 107,724 × 51,272.16
  4. Step 4: Simplify right side
    78,052.08x = 5,523,242,163.84
  5. Step 5: Solve for x
    x = 5,523,242,163.84/78,052.08
  6. Step 6: Final answer
    x = 70,763.55

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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.