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Finding the Fourth Proportional to 60,573.56, 90,875.46 and 21,131

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Solution

The fourth proportional to 60,573.56, 90,875.46 and 21,131 is: 31,701.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,573.56 : 90,875.46 = 21,131 : x
  2. Step 2: Convert to fraction form
    60,573.56/90,875.46 = 21,131/x
  3. Step 3: Cross multiply
    60,573.56x = 90,875.46 × 21,131
  4. Step 4: Simplify right side
    60,573.56x = 1,920,289,345.26
  5. Step 5: Solve for x
    x = 1,920,289,345.26/60,573.56
  6. Step 6: Final answer
    x = 31,701.77

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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.