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Finding the Fourth Proportional to 75,275.70, 112,913.58 and 19,120.02

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Solution

The fourth proportional to 75,275.70, 112,913.58 and 19,120.02 is: 28,680.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,275.70 : 112,913.58 = 19,120.02 : x
  2. Step 2: Convert to fraction form
    75,275.70/112,913.58 = 19,120.02/x
  3. Step 3: Cross multiply
    75,275.70x = 112,913.58 × 19,120.02
  4. Step 4: Simplify right side
    75,275.70x = 2,158,909,907.87
  5. Step 5: Solve for x
    x = 2,158,909,907.87/75,275.70
  6. Step 6: Final answer
    x = 28,680.04

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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.