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Finding the Fourth Proportional to 75,809.80, 104,622.42 and 43,989.40

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Solution

The fourth proportional to 75,809.80, 104,622.42 and 43,989.40 is: 60,708.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,809.80 : 104,622.42 = 43,989.40 : x
  2. Step 2: Convert to fraction form
    75,809.80/104,622.42 = 43,989.40/x
  3. Step 3: Cross multiply
    75,809.80x = 104,622.42 × 43,989.40
  4. Step 4: Simplify right side
    75,809.80x = 4,602,277,482.35
  5. Step 5: Solve for x
    x = 4,602,277,482.35/75,809.80
  6. Step 6: Final answer
    x = 60,708.21

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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.