Home / 56,772.48-78,346.78-31,621.98

Finding the Fourth Proportional to 56,772.48, 78,346.78 and 31,621.98

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Solution

The fourth proportional to 56,772.48, 78,346.78 and 31,621.98 is: 43,638.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,772.48 : 78,346.78 = 31,621.98 : x
  2. Step 2: Convert to fraction form
    56,772.48/78,346.78 = 31,621.98/x
  3. Step 3: Cross multiply
    56,772.48x = 78,346.78 × 31,621.98
  4. Step 4: Simplify right side
    56,772.48x = 2,477,480,310.22
  5. Step 5: Solve for x
    x = 2,477,480,310.22/56,772.48
  6. Step 6: Final answer
    x = 43,638.75

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1.5x scale

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.