Home / 56,800.78-78,388.50-31,307.11

Finding the Fourth Proportional to 56,800.78, 78,388.50 and 31,307.11

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Solution

The fourth proportional to 56,800.78, 78,388.50 and 31,307.11 is: 43,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,800.78 : 78,388.50 = 31,307.11 : x
  2. Step 2: Convert to fraction form
    56,800.78/78,388.50 = 31,307.11/x
  3. Step 3: Cross multiply
    56,800.78x = 78,388.50 × 31,307.11
  4. Step 4: Simplify right side
    56,800.78x = 2,454,117,392.24
  5. Step 5: Solve for x
    x = 2,454,117,392.24/56,800.78
  6. Step 6: Final answer
    x = 43,205.70

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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.