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Finding the Fourth Proportional to 103,584.71, 155,384.90 and 28,703.99

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Solution

The fourth proportional to 103,584.71, 155,384.90 and 28,703.99 is: 43,058.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,584.71 : 155,384.90 = 28,703.99 : x
  2. Step 2: Convert to fraction form
    103,584.71/155,384.90 = 28,703.99/x
  3. Step 3: Cross multiply
    103,584.71x = 155,384.90 × 28,703.99
  4. Step 4: Simplify right side
    103,584.71x = 4,460,166,968.33
  5. Step 5: Solve for x
    x = 4,460,166,968.33/103,584.71
  6. Step 6: Final answer
    x = 43,058.16

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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.