Home / 52,119.60-71,911.08-30,881.28

Finding the Fourth Proportional to 52,119.60, 71,911.08 and 30,881.28

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Solution

The fourth proportional to 52,119.60, 71,911.08 and 30,881.28 is: 42,607.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,119.60 : 71,911.08 = 30,881.28 : x
  2. Step 2: Convert to fraction form
    52,119.60/71,911.08 = 30,881.28/x
  3. Step 3: Cross multiply
    52,119.60x = 71,911.08 × 30,881.28
  4. Step 4: Simplify right side
    52,119.60x = 2,220,706,196.58
  5. Step 5: Solve for x
    x = 2,220,706,196.58/52,119.60
  6. Step 6: Final answer
    x = 42,607.89

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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.