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Finding the Fourth Proportional to 56,480.99, 84,671.10 and 21,445.25

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Solution

The fourth proportional to 56,480.99, 84,671.10 and 21,445.25 is: 32,148.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,480.99 : 84,671.10 = 21,445.25 : x
  2. Step 2: Convert to fraction form
    56,480.99/84,671.10 = 21,445.25/x
  3. Step 3: Cross multiply
    56,480.99x = 84,671.10 × 21,445.25
  4. Step 4: Simplify right side
    56,480.99x = 1,815,792,483.92
  5. Step 5: Solve for x
    x = 1,815,792,483.92/56,480.99
  6. Step 6: Final answer
    x = 32,148.74

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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.