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Finding the Fourth Proportional to 113,439, 170,263.71 and 57,318.52

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Solution

The fourth proportional to 113,439, 170,263.71 and 57,318.52 is: 86,030.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,439 : 170,263.71 = 57,318.52 : x
  2. Step 2: Convert to fraction form
    113,439/170,263.71 = 57,318.52/x
  3. Step 3: Cross multiply
    113,439x = 170,263.71 × 57,318.52
  4. Step 4: Simplify right side
    113,439x = 9,759,263,866.91
  5. Step 5: Solve for x
    x = 9,759,263,866.91/113,439
  6. Step 6: Final answer
    x = 86,030.94

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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.