Home / 103,629.53-155,444.28-28,749.68

Finding the Fourth Proportional to 103,629.53, 155,444.28 and 28,749.68

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Solution

The fourth proportional to 103,629.53, 155,444.28 and 28,749.68 is: 43,124.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,629.53 : 155,444.28 = 28,749.68 : x
  2. Step 2: Convert to fraction form
    103,629.53/155,444.28 = 28,749.68/x
  3. Step 3: Cross multiply
    103,629.53x = 155,444.28 × 28,749.68
  4. Step 4: Simplify right side
    103,629.53x = 4,468,973,307.83
  5. Step 5: Solve for x
    x = 4,468,973,307.83/103,629.53
  6. Step 6: Final answer
    x = 43,124.52

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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.