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Finding the Fourth Proportional to 65,699.76, 90,666.06 and 35,891.76

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Solution

The fourth proportional to 65,699.76, 90,666.06 and 35,891.76 is: 49,530.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,699.76 : 90,666.06 = 35,891.76 : x
  2. Step 2: Convert to fraction form
    65,699.76/90,666.06 = 35,891.76/x
  3. Step 3: Cross multiply
    65,699.76x = 90,666.06 × 35,891.76
  4. Step 4: Simplify right side
    65,699.76x = 3,254,164,465.67
  5. Step 5: Solve for x
    x = 3,254,164,465.67/65,699.76
  6. Step 6: Final answer
    x = 49,530.84

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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.