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Finding the Fourth Proportional to 61,384.64, 91,534.83 and 53,918.76

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Solution

The fourth proportional to 61,384.64, 91,534.83 and 53,918.76 is: 80,401.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,384.64 : 91,534.83 = 53,918.76 : x
  2. Step 2: Convert to fraction form
    61,384.64/91,534.83 = 53,918.76/x
  3. Step 3: Cross multiply
    61,384.64x = 91,534.83 × 53,918.76
  4. Step 4: Simplify right side
    61,384.64x = 4,935,444,671.47
  5. Step 5: Solve for x
    x = 4,935,444,671.47/61,384.64
  6. Step 6: Final answer
    x = 80,401.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.