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Finding the Fourth Proportional to 105,488.74, 145,584.36 and 63,046.36

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Solution

The fourth proportional to 105,488.74, 145,584.36 and 63,046.36 is: 87,009.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,488.74 : 145,584.36 = 63,046.36 : x
  2. Step 2: Convert to fraction form
    105,488.74/145,584.36 = 63,046.36/x
  3. Step 3: Cross multiply
    105,488.74x = 145,584.36 × 63,046.36
  4. Step 4: Simplify right side
    105,488.74x = 9,178,562,927.78
  5. Step 5: Solve for x
    x = 9,178,562,927.78/105,488.74
  6. Step 6: Final answer
    x = 87,009.89

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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.