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Finding the Fourth Proportional to 78,124.19, 117,029.54 and 35,945.51

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Solution

The fourth proportional to 78,124.19, 117,029.54 and 35,945.51 is: 53,846.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,124.19 : 117,029.54 = 35,945.51 : x
  2. Step 2: Convert to fraction form
    78,124.19/117,029.54 = 35,945.51/x
  3. Step 3: Cross multiply
    78,124.19x = 117,029.54 × 35,945.51
  4. Step 4: Simplify right side
    78,124.19x = 4,206,686,005.08
  5. Step 5: Solve for x
    x = 4,206,686,005.08/78,124.19
  6. Step 6: Final answer
    x = 53,846.14

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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.