Home / 103,588.47-155,390.53-28,707.75

Finding the Fourth Proportional to 103,588.47, 155,390.53 and 28,707.75

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Solution

The fourth proportional to 103,588.47, 155,390.53 and 28,707.75 is: 43,063.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,588.47 : 155,390.53 = 28,707.75 : x
  2. Step 2: Convert to fraction form
    103,588.47/155,390.53 = 28,707.75/x
  3. Step 3: Cross multiply
    103,588.47x = 155,390.53 × 28,707.75
  4. Step 4: Simplify right side
    103,588.47x = 4,460,911,710.65
  5. Step 5: Solve for x
    x = 4,460,911,710.65/103,588.47
  6. Step 6: Final answer
    x = 43,063.79

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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.