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Finding the Fourth Proportional to 53,708.79, 80,486.81 and 39,557.54

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Solution

The fourth proportional to 53,708.79, 80,486.81 and 39,557.54 is: 59,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,708.79 : 80,486.81 = 39,557.54 : x
  2. Step 2: Convert to fraction form
    53,708.79/80,486.81 = 39,557.54/x
  3. Step 3: Cross multiply
    53,708.79x = 80,486.81 × 39,557.54
  4. Step 4: Simplify right side
    53,708.79x = 3,183,860,004.83
  5. Step 5: Solve for x
    x = 3,183,860,004.83/53,708.79
  6. Step 6: Final answer
    x = 59,280.05

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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.