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Finding the Fourth Proportional to 72,516.96, 108,772.70 and 19,925.07

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Solution

The fourth proportional to 72,516.96, 108,772.70 and 19,925.07 is: 29,886.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,516.96 : 108,772.70 = 19,925.07 : x
  2. Step 2: Convert to fraction form
    72,516.96/108,772.70 = 19,925.07/x
  3. Step 3: Cross multiply
    72,516.96x = 108,772.70 × 19,925.07
  4. Step 4: Simplify right side
    72,516.96x = 2,167,303,561.96
  5. Step 5: Solve for x
    x = 2,167,303,561.96/72,516.96
  6. Step 6: Final answer
    x = 29,886.85

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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.