Home / 51,615.84-77,355.72-20,434.08

Finding the Fourth Proportional to 51,615.84, 77,355.72 and 20,434.08

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Solution

The fourth proportional to 51,615.84, 77,355.72 and 20,434.08 is: 30,624.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,615.84 : 77,355.72 = 20,434.08 : x
  2. Step 2: Convert to fraction form
    51,615.84/77,355.72 = 20,434.08/x
  3. Step 3: Cross multiply
    51,615.84x = 77,355.72 × 20,434.08
  4. Step 4: Simplify right side
    51,615.84x = 1,580,692,970.94
  5. Step 5: Solve for x
    x = 1,580,692,970.94/51,615.84
  6. Step 6: Final answer
    x = 30,624.18

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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.