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Finding the Fourth Proportional to 103,595.94, 155,378.53 and 28,708.28

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Solution

The fourth proportional to 103,595.94, 155,378.53 and 28,708.28 is: 43,058.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,595.94 : 155,378.53 = 28,708.28 : x
  2. Step 2: Convert to fraction form
    103,595.94/155,378.53 = 28,708.28/x
  3. Step 3: Cross multiply
    103,595.94x = 155,378.53 × 28,708.28
  4. Step 4: Simplify right side
    103,595.94x = 4,460,650,028.55
  5. Step 5: Solve for x
    x = 4,460,650,028.55/103,595.94
  6. Step 6: Final answer
    x = 43,058.15

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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.