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Finding the Fourth Proportional to 65,990.14, 91,042.53 and 43,341.40

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Solution

The fourth proportional to 65,990.14, 91,042.53 and 43,341.40 is: 59,795.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,990.14 : 91,042.53 = 43,341.40 : x
  2. Step 2: Convert to fraction form
    65,990.14/91,042.53 = 43,341.40/x
  3. Step 3: Cross multiply
    65,990.14x = 91,042.53 × 43,341.40
  4. Step 4: Simplify right side
    65,990.14x = 3,945,911,160.87
  5. Step 5: Solve for x
    x = 3,945,911,160.87/65,990.14
  6. Step 6: Final answer
    x = 59,795.46

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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.