Home / 56,811.84-78,400.91-31,319.19

Finding the Fourth Proportional to 56,811.84, 78,400.91 and 31,319.19

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Solution

The fourth proportional to 56,811.84, 78,400.91 and 31,319.19 is: 43,220.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,811.84 : 78,400.91 = 31,319.19 : x
  2. Step 2: Convert to fraction form
    56,811.84/78,400.91 = 31,319.19/x
  3. Step 3: Cross multiply
    56,811.84x = 78,400.91 × 31,319.19
  4. Step 4: Simplify right side
    56,811.84x = 2,455,452,839.87
  5. Step 5: Solve for x
    x = 2,455,452,839.87/56,811.84
  6. Step 6: Final answer
    x = 43,220.79

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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.