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Finding the Fourth Proportional to 65,899.83, 90,963.95 and 40,058.29

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Solution

The fourth proportional to 65,899.83, 90,963.95 and 40,058.29 is: 55,293.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,899.83 : 90,963.95 = 40,058.29 : x
  2. Step 2: Convert to fraction form
    65,899.83/90,963.95 = 40,058.29/x
  3. Step 3: Cross multiply
    65,899.83x = 90,963.95 × 40,058.29
  4. Step 4: Simplify right side
    65,899.83x = 3,643,860,088.35
  5. Step 5: Solve for x
    x = 3,643,860,088.35/65,899.83
  6. Step 6: Final answer
    x = 55,293.92

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.