Home / 78,359.83-108,133.77-42,549.10

Finding the Fourth Proportional to 78,359.83, 108,133.77 and 42,549.10

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Solution

The fourth proportional to 78,359.83, 108,133.77 and 42,549.10 is: 58,716.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,359.83 : 108,133.77 = 42,549.10 : x
  2. Step 2: Convert to fraction form
    78,359.83/108,133.77 = 42,549.10/x
  3. Step 3: Cross multiply
    78,359.83x = 108,133.77 × 42,549.10
  4. Step 4: Simplify right side
    78,359.83x = 4,600,994,593.11
  5. Step 5: Solve for x
    x = 4,600,994,593.11/78,359.83
  6. Step 6: Final answer
    x = 58,716.24

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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.