Home / 91,659.69-137,511.09-28,476.63

Finding the Fourth Proportional to 91,659.69, 137,511.09 and 28,476.63

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Solution

The fourth proportional to 91,659.69, 137,511.09 and 28,476.63 is: 42,721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,659.69 : 137,511.09 = 28,476.63 : x
  2. Step 2: Convert to fraction form
    91,659.69/137,511.09 = 28,476.63/x
  3. Step 3: Cross multiply
    91,659.69x = 137,511.09 × 28,476.63
  4. Step 4: Simplify right side
    91,659.69x = 3,915,852,430.83
  5. Step 5: Solve for x
    x = 3,915,852,430.83/91,659.69
  6. Step 6: Final answer
    x = 42,721.64

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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.