Home / 51,239.80-70,690.54-31,089.28

Finding the Fourth Proportional to 51,239.80, 70,690.54 and 31,089.28

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Solution

The fourth proportional to 51,239.80, 70,690.54 and 31,089.28 is: 42,890.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,239.80 : 70,690.54 = 31,089.28 : x
  2. Step 2: Convert to fraction form
    51,239.80/70,690.54 = 31,089.28/x
  3. Step 3: Cross multiply
    51,239.80x = 70,690.54 × 31,089.28
  4. Step 4: Simplify right side
    51,239.80x = 2,197,717,991.41
  5. Step 5: Solve for x
    x = 2,197,717,991.41/51,239.80
  6. Step 6: Final answer
    x = 42,890.84

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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.