Home / 78,501.54-117,752.34-19,338.36

Finding the Fourth Proportional to 78,501.54, 117,752.34 and 19,338.36

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Solution

The fourth proportional to 78,501.54, 117,752.34 and 19,338.36 is: 29,007.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,501.54 : 117,752.34 = 19,338.36 : x
  2. Step 2: Convert to fraction form
    78,501.54/117,752.34 = 19,338.36/x
  3. Step 3: Cross multiply
    78,501.54x = 117,752.34 × 19,338.36
  4. Step 4: Simplify right side
    78,501.54x = 2,277,137,141.76
  5. Step 5: Solve for x
    x = 2,277,137,141.76/78,501.54
  6. Step 6: Final answer
    x = 29,007.55

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1.5x scale

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.