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Finding the Fourth Proportional to 75,276.08, 112,914.16 and 19,120.40

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Solution

The fourth proportional to 75,276.08, 112,914.16 and 19,120.40 is: 28,680.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,276.08 : 112,914.16 = 19,120.40 : x
  2. Step 2: Convert to fraction form
    75,276.08/112,914.16 = 19,120.40/x
  3. Step 3: Cross multiply
    75,276.08x = 112,914.16 × 19,120.40
  4. Step 4: Simplify right side
    75,276.08x = 2,158,963,904.86
  5. Step 5: Solve for x
    x = 2,158,963,904.86/75,276.08
  6. Step 6: Final answer
    x = 28,680.61

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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.