Home / 78,309.41-108,017.82-46,455.75

Finding the Fourth Proportional to 78,309.41, 108,017.82 and 46,455.75

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Solution

The fourth proportional to 78,309.41, 108,017.82 and 46,455.75 is: 64,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,309.41 : 108,017.82 = 46,455.75 : x
  2. Step 2: Convert to fraction form
    78,309.41/108,017.82 = 46,455.75/x
  3. Step 3: Cross multiply
    78,309.41x = 108,017.82 × 46,455.75
  4. Step 4: Simplify right side
    78,309.41x = 5,018,048,841.47
  5. Step 5: Solve for x
    x = 5,018,048,841.47/78,309.41
  6. Step 6: Final answer
    x = 64,079.77

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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.