Home / 285,043.15-427,578.50-74,681.29

Finding the Fourth Proportional to 285,043.15, 427,578.50 and 74,681.29

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Solution

The fourth proportional to 285,043.15, 427,578.50 and 74,681.29 is: 112,025.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,043.15 : 427,578.50 = 74,681.29 : x
  2. Step 2: Convert to fraction form
    285,043.15/427,578.50 = 74,681.29/x
  3. Step 3: Cross multiply
    285,043.15x = 427,578.50 × 74,681.29
  4. Step 4: Simplify right side
    285,043.15x = 31,932,113,956.27
  5. Step 5: Solve for x
    x = 31,932,113,956.27/285,043.15
  6. Step 6: Final answer
    x = 112,025.54

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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.