Home / 31,630.78-47,656.99-28,632.43

Finding the Fourth Proportional to 31,630.78, 47,656.99 and 28,632.43

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Solution

The fourth proportional to 31,630.78, 47,656.99 and 28,632.43 is: 43,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,630.78 : 47,656.99 = 28,632.43 : x
  2. Step 2: Convert to fraction form
    31,630.78/47,656.99 = 28,632.43/x
  3. Step 3: Cross multiply
    31,630.78x = 47,656.99 × 28,632.43
  4. Step 4: Simplify right side
    31,630.78x = 1,364,535,430.19
  5. Step 5: Solve for x
    x = 1,364,535,430.19/31,630.78
  6. Step 6: Final answer
    x = 43,139.48

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.