Home / 40,728.29-61,101.99-12,646.89

Finding the Fourth Proportional to 40,728.29, 61,101.99 and 12,646.89

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Solution

The fourth proportional to 40,728.29, 61,101.99 and 12,646.89 is: 18,973.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.29 : 61,101.99 = 12,646.89 : x
  2. Step 2: Convert to fraction form
    40,728.29/61,101.99 = 12,646.89/x
  3. Step 3: Cross multiply
    40,728.29x = 61,101.99 × 12,646.89
  4. Step 4: Simplify right side
    40,728.29x = 772,750,146.31
  5. Step 5: Solve for x
    x = 772,750,146.31/40,728.29
  6. Step 6: Final answer
    x = 18,973.30

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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.