Home / 51,630.90-71,242.20-30,407.28

Finding the Fourth Proportional to 51,630.90, 71,242.20 and 30,407.28

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Solution

The fourth proportional to 51,630.90, 71,242.20 and 30,407.28 is: 41,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,630.90 : 71,242.20 = 30,407.28 : x
  2. Step 2: Convert to fraction form
    51,630.90/71,242.20 = 30,407.28/x
  3. Step 3: Cross multiply
    51,630.90x = 71,242.20 × 30,407.28
  4. Step 4: Simplify right side
    51,630.90x = 2,166,281,523.22
  5. Step 5: Solve for x
    x = 2,166,281,523.22/51,630.90
  6. Step 6: Final answer
    x = 41,957.07

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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.