Home / 56,855.28-78,460.64-31,706.40

Finding the Fourth Proportional to 56,855.28, 78,460.64 and 31,706.40

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Solution

The fourth proportional to 56,855.28, 78,460.64 and 31,706.40 is: 43,755.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,855.28 : 78,460.64 = 31,706.40 : x
  2. Step 2: Convert to fraction form
    56,855.28/78,460.64 = 31,706.40/x
  3. Step 3: Cross multiply
    56,855.28x = 78,460.64 × 31,706.40
  4. Step 4: Simplify right side
    56,855.28x = 2,487,704,436.10
  5. Step 5: Solve for x
    x = 2,487,704,436.10/56,855.28
  6. Step 6: Final answer
    x = 43,755.03

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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.