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Finding the Fourth Proportional to 60,480.96, 90,762.72 and 21,037.68

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Solution

The fourth proportional to 60,480.96, 90,762.72 and 21,037.68 is: 31,570.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,480.96 : 90,762.72 = 21,037.68 : x
  2. Step 2: Convert to fraction form
    60,480.96/90,762.72 = 21,037.68/x
  3. Step 3: Cross multiply
    60,480.96x = 90,762.72 × 21,037.68
  4. Step 4: Simplify right side
    60,480.96x = 1,909,437,059.29
  5. Step 5: Solve for x
    x = 1,909,437,059.29/60,480.96
  6. Step 6: Final answer
    x = 31,570.88

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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.