Home / 76,119.13-105,044.58-42,129.94

Finding the Fourth Proportional to 76,119.13, 105,044.58 and 42,129.94

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Solution

The fourth proportional to 76,119.13, 105,044.58 and 42,129.94 is: 58,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,119.13 : 105,044.58 = 42,129.94 : x
  2. Step 2: Convert to fraction form
    76,119.13/105,044.58 = 42,129.94/x
  3. Step 3: Cross multiply
    76,119.13x = 105,044.58 × 42,129.94
  4. Step 4: Simplify right side
    76,119.13x = 4,425,521,852.73
  5. Step 5: Solve for x
    x = 4,425,521,852.73/76,119.13
  6. Step 6: Final answer
    x = 58,139.42

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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.