Home / 78,172.24-107,878.08-45,928.57

Finding the Fourth Proportional to 78,172.24, 107,878.08 and 45,928.57

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Solution

The fourth proportional to 78,172.24, 107,878.08 and 45,928.57 is: 63,381.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,172.24 : 107,878.08 = 45,928.57 : x
  2. Step 2: Convert to fraction form
    78,172.24/107,878.08 = 45,928.57/x
  3. Step 3: Cross multiply
    78,172.24x = 107,878.08 × 45,928.57
  4. Step 4: Simplify right side
    78,172.24x = 4,954,685,948.75
  5. Step 5: Solve for x
    x = 4,954,685,948.75/78,172.24
  6. Step 6: Final answer
    x = 63,381.66

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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.