Home / 78,321.98-108,081.44-42,511.23

Finding the Fourth Proportional to 78,321.98, 108,081.44 and 42,511.23

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Solution

The fourth proportional to 78,321.98, 108,081.44 and 42,511.23 is: 58,663.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,321.98 : 108,081.44 = 42,511.23 : x
  2. Step 2: Convert to fraction form
    78,321.98/108,081.44 = 42,511.23/x
  3. Step 3: Cross multiply
    78,321.98x = 108,081.44 × 42,511.23
  4. Step 4: Simplify right side
    78,321.98x = 4,594,674,954.57
  5. Step 5: Solve for x
    x = 4,594,674,954.57/78,321.98
  6. Step 6: Final answer
    x = 58,663.93

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1.5x scale

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.