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Finding the Fourth Proportional to 53,969.41, 80,905.10 and 18,889.93

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Solution

The fourth proportional to 53,969.41, 80,905.10 and 18,889.93 is: 28,317.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,969.41 : 80,905.10 = 18,889.93 : x
  2. Step 2: Convert to fraction form
    53,969.41/80,905.10 = 18,889.93/x
  3. Step 3: Cross multiply
    53,969.41x = 80,905.10 × 18,889.93
  4. Step 4: Simplify right side
    53,969.41x = 1,528,291,675.64
  5. Step 5: Solve for x
    x = 1,528,291,675.64/53,969.41
  6. Step 6: Final answer
    x = 28,317.74

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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.