Home / 77,861.75-107,449.20-42,051.76

Finding the Fourth Proportional to 77,861.75, 107,449.20 and 42,051.76

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Solution

The fourth proportional to 77,861.75, 107,449.20 and 42,051.76 is: 58,031.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,861.75 : 107,449.20 = 42,051.76 : x
  2. Step 2: Convert to fraction form
    77,861.75/107,449.20 = 42,051.76/x
  3. Step 3: Cross multiply
    77,861.75x = 107,449.20 × 42,051.76
  4. Step 4: Simplify right side
    77,861.75x = 4,518,427,970.59
  5. Step 5: Solve for x
    x = 4,518,427,970.59/77,861.75
  6. Step 6: Final answer
    x = 58,031.42

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1.5x scale

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.