Home / 75,430.13-113,159.77-28,679.36

Finding the Fourth Proportional to 75,430.13, 113,159.77 and 28,679.36

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Solution

The fourth proportional to 75,430.13, 113,159.77 and 28,679.36 is: 43,024.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,430.13 : 113,159.77 = 28,679.36 : x
  2. Step 2: Convert to fraction form
    75,430.13/113,159.77 = 28,679.36/x
  3. Step 3: Cross multiply
    75,430.13x = 113,159.77 × 28,679.36
  4. Step 4: Simplify right side
    75,430.13x = 3,245,349,143.85
  5. Step 5: Solve for x
    x = 3,245,349,143.85/75,430.13
  6. Step 6: Final answer
    x = 43,024.58

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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.