Home / 70,722.18-97,553.77-42,031.78

Finding the Fourth Proportional to 70,722.18, 97,553.77 and 42,031.78

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Solution

The fourth proportional to 70,722.18, 97,553.77 and 42,031.78 is: 57,978.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,722.18 : 97,553.77 = 42,031.78 : x
  2. Step 2: Convert to fraction form
    70,722.18/97,553.77 = 42,031.78/x
  3. Step 3: Cross multiply
    70,722.18x = 97,553.77 × 42,031.78
  4. Step 4: Simplify right side
    70,722.18x = 4,100,358,249.85
  5. Step 5: Solve for x
    x = 4,100,358,249.85/70,722.18
  6. Step 6: Final answer
    x = 57,978.39

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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.