Home / 78,371.04-108,152.76-42,561.36

Finding the Fourth Proportional to 78,371.04, 108,152.76 and 42,561.36

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Solution

The fourth proportional to 78,371.04, 108,152.76 and 42,561.36 is: 58,735.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.04 : 108,152.76 = 42,561.36 : x
  2. Step 2: Convert to fraction form
    78,371.04/108,152.76 = 42,561.36/x
  3. Step 3: Cross multiply
    78,371.04x = 108,152.76 × 42,561.36
  4. Step 4: Simplify right side
    78,371.04x = 4,603,128,553.35
  5. Step 5: Solve for x
    x = 4,603,128,553.35/78,371.04
  6. Step 6: Final answer
    x = 58,735.07

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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.