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Finding the Fourth Proportional to 75,116.92, 103,657.98 and 43,290.40

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Solution

The fourth proportional to 75,116.92, 103,657.98 and 43,290.40 is: 59,738.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,116.92 : 103,657.98 = 43,290.40 : x
  2. Step 2: Convert to fraction form
    75,116.92/103,657.98 = 43,290.40/x
  3. Step 3: Cross multiply
    75,116.92x = 103,657.98 × 43,290.40
  4. Step 4: Simplify right side
    75,116.92x = 4,487,395,417.39
  5. Step 5: Solve for x
    x = 4,487,395,417.39/75,116.92
  6. Step 6: Final answer
    x = 59,738.81

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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.