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Finding the Fourth Proportional to 77,336.68, 106,720.90 and 43,341

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Solution

The fourth proportional to 77,336.68, 106,720.90 and 43,341 is: 59,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,336.68 : 106,720.90 = 43,341 : x
  2. Step 2: Convert to fraction form
    77,336.68/106,720.90 = 43,341/x
  3. Step 3: Cross multiply
    77,336.68x = 106,720.90 × 43,341
  4. Step 4: Simplify right side
    77,336.68x = 4,625,390,526.90
  5. Step 5: Solve for x
    x = 4,625,390,526.90/77,336.68
  6. Step 6: Final answer
    x = 59,808.50

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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.