Home / 65,938.59-90,979.50-39,076.47

Finding the Fourth Proportional to 65,938.59, 90,979.50 and 39,076.47

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Solution

The fourth proportional to 65,938.59, 90,979.50 and 39,076.47 is: 53,916.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,938.59 : 90,979.50 = 39,076.47 : x
  2. Step 2: Convert to fraction form
    65,938.59/90,979.50 = 39,076.47/x
  3. Step 3: Cross multiply
    65,938.59x = 90,979.50 × 39,076.47
  4. Step 4: Simplify right side
    65,938.59x = 3,555,157,702.37
  5. Step 5: Solve for x
    x = 3,555,157,702.37/65,938.59
  6. Step 6: Final answer
    x = 53,916.19

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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.