Home / 78,371.04-108,152.01-42,561.06

Finding the Fourth Proportional to 78,371.04, 108,152.01 and 42,561.06

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Solution

The fourth proportional to 78,371.04, 108,152.01 and 42,561.06 is: 58,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,371.04 : 108,152.01 = 42,561.06 : x
  2. Step 2: Convert to fraction form
    78,371.04/108,152.01 = 42,561.06/x
  3. Step 3: Cross multiply
    78,371.04x = 108,152.01 × 42,561.06
  4. Step 4: Simplify right side
    78,371.04x = 4,603,064,186.73
  5. Step 5: Solve for x
    x = 4,603,064,186.73/78,371.04
  6. Step 6: Final answer
    x = 58,734.25

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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.