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Finding the Fourth Proportional to 53,859.40, 80,783.40 and 14,420.52

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Solution

The fourth proportional to 53,859.40, 80,783.40 and 14,420.52 is: 21,629.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,859.40 : 80,783.40 = 14,420.52 : x
  2. Step 2: Convert to fraction form
    53,859.40/80,783.40 = 14,420.52/x
  3. Step 3: Cross multiply
    53,859.40x = 80,783.40 × 14,420.52
  4. Step 4: Simplify right side
    53,859.40x = 1,164,938,635.37
  5. Step 5: Solve for x
    x = 1,164,938,635.37/53,859.40
  6. Step 6: Final answer
    x = 21,629.25

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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.