Home / 40,728.47-61,102.28-12,647.08

Finding the Fourth Proportional to 40,728.47, 61,102.28 and 12,647.08

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Solution

The fourth proportional to 40,728.47, 61,102.28 and 12,647.08 is: 18,973.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.47 : 61,102.28 = 12,647.08 : x
  2. Step 2: Convert to fraction form
    40,728.47/61,102.28 = 12,647.08/x
  3. Step 3: Cross multiply
    40,728.47x = 61,102.28 × 12,647.08
  4. Step 4: Simplify right side
    40,728.47x = 772,765,207.35
  5. Step 5: Solve for x
    x = 772,765,207.35/40,728.47
  6. Step 6: Final answer
    x = 18,973.59

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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.