Home / 56,629.26-78,149.34-31,136.67

Finding the Fourth Proportional to 56,629.26, 78,149.34 and 31,136.67

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Solution

The fourth proportional to 56,629.26, 78,149.34 and 31,136.67 is: 42,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,629.26 : 78,149.34 = 31,136.67 : x
  2. Step 2: Convert to fraction form
    56,629.26/78,149.34 = 31,136.67/x
  3. Step 3: Cross multiply
    56,629.26x = 78,149.34 × 31,136.67
  4. Step 4: Simplify right side
    56,629.26x = 2,433,310,210.30
  5. Step 5: Solve for x
    x = 2,433,310,210.30/56,629.26
  6. Step 6: Final answer
    x = 42,969.13

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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.