Home / 78,048.28-116,970.32-31,333.96

Finding the Fourth Proportional to 78,048.28, 116,970.32 and 31,333.96

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Solution

The fourth proportional to 78,048.28, 116,970.32 and 31,333.96 is: 46,959.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,048.28 : 116,970.32 = 31,333.96 : x
  2. Step 2: Convert to fraction form
    78,048.28/116,970.32 = 31,333.96/x
  3. Step 3: Cross multiply
    78,048.28x = 116,970.32 × 31,333.96
  4. Step 4: Simplify right side
    78,048.28x = 3,665,143,328.07
  5. Step 5: Solve for x
    x = 3,665,143,328.07/78,048.28
  6. Step 6: Final answer
    x = 46,959.95

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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.