Home / 40,728.11-61,101.71-12,646.71

Finding the Fourth Proportional to 40,728.11, 61,101.71 and 12,646.71

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Solution

The fourth proportional to 40,728.11, 61,101.71 and 12,646.71 is: 18,973.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,728.11 : 61,101.71 = 12,646.71 : x
  2. Step 2: Convert to fraction form
    40,728.11/61,101.71 = 12,646.71/x
  3. Step 3: Cross multiply
    40,728.11x = 61,101.71 × 12,646.71
  4. Step 4: Simplify right side
    40,728.11x = 772,735,543.64
  5. Step 5: Solve for x
    x = 772,735,543.64/40,728.11
  6. Step 6: Final answer
    x = 18,973.03

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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.