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Finding the Fourth Proportional to 57,838.60, 86,628.30 and 30,104.20

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Solution

The fourth proportional to 57,838.60, 86,628.30 and 30,104.20 is: 45,088.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,838.60 : 86,628.30 = 30,104.20 : x
  2. Step 2: Convert to fraction form
    57,838.60/86,628.30 = 30,104.20/x
  3. Step 3: Cross multiply
    57,838.60x = 86,628.30 × 30,104.20
  4. Step 4: Simplify right side
    57,838.60x = 2,607,875,668.86
  5. Step 5: Solve for x
    x = 2,607,875,668.86/57,838.60
  6. Step 6: Final answer
    x = 45,088.84

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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.