Home / 281,051.50-421,546.20-70,689.52

Finding the Fourth Proportional to 281,051.50, 421,546.20 and 70,689.52

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Solution

The fourth proportional to 281,051.50, 421,546.20 and 70,689.52 is: 106,026.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,051.50 : 421,546.20 = 70,689.52 : x
  2. Step 2: Convert to fraction form
    281,051.50/421,546.20 = 70,689.52/x
  3. Step 3: Cross multiply
    281,051.50x = 421,546.20 × 70,689.52
  4. Step 4: Simplify right side
    281,051.50x = 29,798,898,535.82
  5. Step 5: Solve for x
    x = 29,798,898,535.82/281,051.50
  6. Step 6: Final answer
    x = 106,026.47

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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.