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Finding the Fourth Proportional to 72,001.74, 108,005.04 and 19,411.68

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Solution

The fourth proportional to 72,001.74, 108,005.04 and 19,411.68 is: 29,118.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,001.74 : 108,005.04 = 19,411.68 : x
  2. Step 2: Convert to fraction form
    72,001.74/108,005.04 = 19,411.68/x
  3. Step 3: Cross multiply
    72,001.74x = 108,005.04 × 19,411.68
  4. Step 4: Simplify right side
    72,001.74x = 2,096,559,274.87
  5. Step 5: Solve for x
    x = 2,096,559,274.87/72,001.74
  6. Step 6: Final answer
    x = 29,118.18

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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.