Home / 78,975.18-108,985.77-43,165.35

Finding the Fourth Proportional to 78,975.18, 108,985.77 and 43,165.35

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Solution

The fourth proportional to 78,975.18, 108,985.77 and 43,165.35 is: 59,568.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,975.18 : 108,985.77 = 43,165.35 : x
  2. Step 2: Convert to fraction form
    78,975.18/108,985.77 = 43,165.35/x
  3. Step 3: Cross multiply
    78,975.18x = 108,985.77 × 43,165.35
  4. Step 4: Simplify right side
    78,975.18x = 4,704,408,907.07
  5. Step 5: Solve for x
    x = 4,704,408,907.07/78,975.18
  6. Step 6: Final answer
    x = 59,568.19

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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.