Home / 56,647.12-78,173.93-31,154.60

Finding the Fourth Proportional to 56,647.12, 78,173.93 and 31,154.60

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Solution

The fourth proportional to 56,647.12, 78,173.93 and 31,154.60 is: 42,993.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,647.12 : 78,173.93 = 31,154.60 : x
  2. Step 2: Convert to fraction form
    56,647.12/78,173.93 = 31,154.60/x
  3. Step 3: Cross multiply
    56,647.12x = 78,173.93 × 31,154.60
  4. Step 4: Simplify right side
    56,647.12x = 2,435,477,519.58
  5. Step 5: Solve for x
    x = 2,435,477,519.58/56,647.12
  6. Step 6: Final answer
    x = 42,993.85

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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.