Home / 56,971.85-78,622.74-31,479.85

Finding the Fourth Proportional to 56,971.85, 78,622.74 and 31,479.85

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Solution

The fourth proportional to 56,971.85, 78,622.74 and 31,479.85 is: 43,443.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,971.85 : 78,622.74 = 31,479.85 : x
  2. Step 2: Convert to fraction form
    56,971.85/78,622.74 = 31,479.85/x
  3. Step 3: Cross multiply
    56,971.85x = 78,622.74 × 31,479.85
  4. Step 4: Simplify right side
    56,971.85x = 2,475,031,904.39
  5. Step 5: Solve for x
    x = 2,475,031,904.39/56,971.85
  6. Step 6: Final answer
    x = 43,443.07

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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.