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Finding the Fourth Proportional to 68,430.76, 94,433.54 and 38,216.64

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Solution

The fourth proportional to 68,430.76, 94,433.54 and 38,216.64 is: 52,738.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,430.76 : 94,433.54 = 38,216.64 : x
  2. Step 2: Convert to fraction form
    68,430.76/94,433.54 = 38,216.64/x
  3. Step 3: Cross multiply
    68,430.76x = 94,433.54 × 38,216.64
  4. Step 4: Simplify right side
    68,430.76x = 3,608,932,602.11
  5. Step 5: Solve for x
    x = 3,608,932,602.11/68,430.76
  6. Step 6: Final answer
    x = 52,738.46

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1.5x scale

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.