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Finding the Fourth Proportional to 72,570.60, 108,790.29 and 25,812.54

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Solution

The fourth proportional to 72,570.60, 108,790.29 and 25,812.54 is: 38,695.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,570.60 : 108,790.29 = 25,812.54 : x
  2. Step 2: Convert to fraction form
    72,570.60/108,790.29 = 25,812.54/x
  3. Step 3: Cross multiply
    72,570.60x = 108,790.29 × 25,812.54
  4. Step 4: Simplify right side
    72,570.60x = 2,808,153,712.24
  5. Step 5: Solve for x
    x = 2,808,153,712.24/72,570.60
  6. Step 6: Final answer
    x = 38,695.47

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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.