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Finding the Fourth Proportional to 60,573.25, 90,860.64 and 21,130.34

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Solution

The fourth proportional to 60,573.25, 90,860.64 and 21,130.34 is: 31,695.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,573.25 : 90,860.64 = 21,130.34 : x
  2. Step 2: Convert to fraction form
    60,573.25/90,860.64 = 21,130.34/x
  3. Step 3: Cross multiply
    60,573.25x = 90,860.64 × 21,130.34
  4. Step 4: Simplify right side
    60,573.25x = 1,919,915,682.28
  5. Step 5: Solve for x
    x = 1,919,915,682.28/60,573.25
  6. Step 6: Final answer
    x = 31,695.77

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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.