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Finding the Fourth Proportional to 114,931.71, 172,028.81 and 61,490.00

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Solution

The fourth proportional to 114,931.71, 172,028.81 and 61,490.00 is: 92,037.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,931.71 : 172,028.81 = 61,490.00 : x
  2. Step 2: Convert to fraction form
    114,931.71/172,028.81 = 61,490.00/x
  3. Step 3: Cross multiply
    114,931.71x = 172,028.81 × 61,490.00
  4. Step 4: Simplify right side
    114,931.71x = 10,578,052,110.70
  5. Step 5: Solve for x
    x = 10,578,052,110.70/114,931.71
  6. Step 6: Final answer
    x = 92,037.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.