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Finding the Fourth Proportional to 71,582.16, 107,365.02 and 18,995.74

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Solution

The fourth proportional to 71,582.16, 107,365.02 and 18,995.74 is: 28,491.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,582.16 : 107,365.02 = 18,995.74 : x
  2. Step 2: Convert to fraction form
    71,582.16/107,365.02 = 18,995.74/x
  3. Step 3: Cross multiply
    71,582.16x = 107,365.02 × 18,995.74
  4. Step 4: Simplify right side
    71,582.16x = 2,039,478,005.01
  5. Step 5: Solve for x
    x = 2,039,478,005.01/71,582.16
  6. Step 6: Final answer
    x = 28,491.43

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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.