Home / 53,315.51-79,985.55-28,379.60

Finding the Fourth Proportional to 53,315.51, 79,985.55 and 28,379.60

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Solution

The fourth proportional to 53,315.51, 79,985.55 and 28,379.60 is: 42,575.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,315.51 : 79,985.55 = 28,379.60 : x
  2. Step 2: Convert to fraction form
    53,315.51/79,985.55 = 28,379.60/x
  3. Step 3: Cross multiply
    53,315.51x = 79,985.55 × 28,379.60
  4. Step 4: Simplify right side
    53,315.51x = 2,269,957,514.85
  5. Step 5: Solve for x
    x = 2,269,957,514.85/53,315.51
  6. Step 6: Final answer
    x = 42,575.93

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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.