Home / 56,752.75-78,319.34-31,259.69

Finding the Fourth Proportional to 56,752.75, 78,319.34 and 31,259.69

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Solution

The fourth proportional to 56,752.75, 78,319.34 and 31,259.69 is: 43,138.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,752.75 : 78,319.34 = 31,259.69 : x
  2. Step 2: Convert to fraction form
    56,752.75/78,319.34 = 31,259.69/x
  3. Step 3: Cross multiply
    56,752.75x = 78,319.34 × 31,259.69
  4. Step 4: Simplify right side
    56,752.75x = 2,448,238,152.43
  5. Step 5: Solve for x
    x = 2,448,238,152.43/56,752.75
  6. Step 6: Final answer
    x = 43,138.67

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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.