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Finding the Fourth Proportional to 57,998.88, 87,032.88 and 21,065.76

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Solution

The fourth proportional to 57,998.88, 87,032.88 and 21,065.76 is: 31,611.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,998.88 : 87,032.88 = 21,065.76 : x
  2. Step 2: Convert to fraction form
    57,998.88/87,032.88 = 21,065.76/x
  3. Step 3: Cross multiply
    57,998.88x = 87,032.88 × 21,065.76
  4. Step 4: Simplify right side
    57,998.88x = 1,833,413,762.19
  5. Step 5: Solve for x
    x = 1,833,413,762.19/57,998.88
  6. Step 6: Final answer
    x = 31,611.19

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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.