Home / 53,720.26-74,129.63-31,060.72

Finding the Fourth Proportional to 53,720.26, 74,129.63 and 31,060.72

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Solution

The fourth proportional to 53,720.26, 74,129.63 and 31,060.72 is: 42,861.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,720.26 : 74,129.63 = 31,060.72 : x
  2. Step 2: Convert to fraction form
    53,720.26/74,129.63 = 31,060.72/x
  3. Step 3: Cross multiply
    53,720.26x = 74,129.63 × 31,060.72
  4. Step 4: Simplify right side
    53,720.26x = 2,302,519,525.83
  5. Step 5: Solve for x
    x = 2,302,519,525.83/53,720.26
  6. Step 6: Final answer
    x = 42,861.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.