Home / 80,031.58-120,012-42,582.77

Finding the Fourth Proportional to 80,031.58, 120,012 and 42,582.77

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Solution

The fourth proportional to 80,031.58, 120,012 and 42,582.77 is: 63,855.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,031.58 : 120,012 = 42,582.77 : x
  2. Step 2: Convert to fraction form
    80,031.58/120,012 = 42,582.77/x
  3. Step 3: Cross multiply
    80,031.58x = 120,012 × 42,582.77
  4. Step 4: Simplify right side
    80,031.58x = 5,110,443,393.24
  5. Step 5: Solve for x
    x = 5,110,443,393.24/80,031.58
  6. Step 6: Final answer
    x = 63,855.34

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1.5x scale

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.