Home / 53,126.65-79,687.41-13,145.47

Finding the Fourth Proportional to 53,126.65, 79,687.41 and 13,145.47

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Solution

The fourth proportional to 53,126.65, 79,687.41 and 13,145.47 is: 19,717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,126.65 : 79,687.41 = 13,145.47 : x
  2. Step 2: Convert to fraction form
    53,126.65/79,687.41 = 13,145.47/x
  3. Step 3: Cross multiply
    53,126.65x = 79,687.41 × 13,145.47
  4. Step 4: Simplify right side
    53,126.65x = 1,047,528,209.02
  5. Step 5: Solve for x
    x = 1,047,528,209.02/53,126.65
  6. Step 6: Final answer
    x = 19,717.57

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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.