Home / 78,545.36-117,869.88-41,635.28

Finding the Fourth Proportional to 78,545.36, 117,869.88 and 41,635.28

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Solution

The fourth proportional to 78,545.36, 117,869.88 and 41,635.28 is: 62,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,545.36 : 117,869.88 = 41,635.28 : x
  2. Step 2: Convert to fraction form
    78,545.36/117,869.88 = 41,635.28/x
  3. Step 3: Cross multiply
    78,545.36x = 117,869.88 × 41,635.28
  4. Step 4: Simplify right side
    78,545.36x = 4,907,545,457.37
  5. Step 5: Solve for x
    x = 4,907,545,457.37/78,545.36
  6. Step 6: Final answer
    x = 62,480.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.