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Finding the Fourth Proportional to 55,572.60, 83,300.58 and 39,981.72

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Solution

The fourth proportional to 55,572.60, 83,300.58 and 39,981.72 is: 59,930.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,572.60 : 83,300.58 = 39,981.72 : x
  2. Step 2: Convert to fraction form
    55,572.60/83,300.58 = 39,981.72/x
  3. Step 3: Cross multiply
    55,572.60x = 83,300.58 × 39,981.72
  4. Step 4: Simplify right side
    55,572.60x = 3,330,500,465.40
  5. Step 5: Solve for x
    x = 3,330,500,465.40/55,572.60
  6. Step 6: Final answer
    x = 59,930.62

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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.