Home / 75,274.48-112,911.76-19,118.80

Finding the Fourth Proportional to 75,274.48, 112,911.76 and 19,118.80

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Solution

The fourth proportional to 75,274.48, 112,911.76 and 19,118.80 is: 28,678.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,274.48 : 112,911.76 = 19,118.80 : x
  2. Step 2: Convert to fraction form
    75,274.48/112,911.76 = 19,118.80/x
  3. Step 3: Cross multiply
    75,274.48x = 112,911.76 × 19,118.80
  4. Step 4: Simplify right side
    75,274.48x = 2,158,736,696.94
  5. Step 5: Solve for x
    x = 2,158,736,696.94/75,274.48
  6. Step 6: Final answer
    x = 28,678.20

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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.