Home / 53,131.14-79,701.60-13,688.40

Finding the Fourth Proportional to 53,131.14, 79,701.60 and 13,688.40

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Solution

The fourth proportional to 53,131.14, 79,701.60 and 13,688.40 is: 20,533.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,131.14 : 79,701.60 = 13,688.40 : x
  2. Step 2: Convert to fraction form
    53,131.14/79,701.60 = 13,688.40/x
  3. Step 3: Cross multiply
    53,131.14x = 79,701.60 × 13,688.40
  4. Step 4: Simplify right side
    53,131.14x = 1,090,987,381.44
  5. Step 5: Solve for x
    x = 1,090,987,381.44/53,131.14
  6. Step 6: Final answer
    x = 20,533.86

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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.