Home / 103,587.21-155,388.65-28,706.49

Finding the Fourth Proportional to 103,587.21, 155,388.65 and 28,706.49

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Solution

The fourth proportional to 103,587.21, 155,388.65 and 28,706.49 is: 43,061.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,587.21 : 155,388.65 = 28,706.49 : x
  2. Step 2: Convert to fraction form
    103,587.21/155,388.65 = 28,706.49/x
  3. Step 3: Cross multiply
    103,587.21x = 155,388.65 × 28,706.49
  4. Step 4: Simplify right side
    103,587.21x = 4,460,662,727.34
  5. Step 5: Solve for x
    x = 4,460,662,727.34/103,587.21
  6. Step 6: Final answer
    x = 43,061.91

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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.