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Finding the Fourth Proportional to 45,058.78, 67,583.85 and 13,885.66

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Solution

The fourth proportional to 45,058.78, 67,583.85 and 13,885.66 is: 20,827.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,058.78 : 67,583.85 = 13,885.66 : x
  2. Step 2: Convert to fraction form
    45,058.78/67,583.85 = 13,885.66/x
  3. Step 3: Cross multiply
    45,058.78x = 67,583.85 × 13,885.66
  4. Step 4: Simplify right side
    45,058.78x = 938,446,362.59
  5. Step 5: Solve for x
    x = 938,446,362.59/45,058.78
  6. Step 6: Final answer
    x = 20,827.16

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1.5x scale

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.