Home / 78,991.16-118,462.80-41,531.02

Finding the Fourth Proportional to 78,991.16, 118,462.80 and 41,531.02

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Solution

The fourth proportional to 78,991.16, 118,462.80 and 41,531.02 is: 62,283.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,991.16 : 118,462.80 = 41,531.02 : x
  2. Step 2: Convert to fraction form
    78,991.16/118,462.80 = 41,531.02/x
  3. Step 3: Cross multiply
    78,991.16x = 118,462.80 × 41,531.02
  4. Step 4: Simplify right side
    78,991.16x = 4,919,880,916.06
  5. Step 5: Solve for x
    x = 4,919,880,916.06/78,991.16
  6. Step 6: Final answer
    x = 62,283.94

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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.