Home / 57,099.19-78,798.99-31,259.55

Finding the Fourth Proportional to 57,099.19, 78,798.99 and 31,259.55

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Solution

The fourth proportional to 57,099.19, 78,798.99 and 31,259.55 is: 43,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,099.19 : 78,798.99 = 31,259.55 : x
  2. Step 2: Convert to fraction form
    57,099.19/78,798.99 = 31,259.55/x
  3. Step 3: Cross multiply
    57,099.19x = 78,798.99 × 31,259.55
  4. Step 4: Simplify right side
    57,099.19x = 2,463,220,967.85
  5. Step 5: Solve for x
    x = 2,463,220,967.85/57,099.19
  6. Step 6: Final answer
    x = 43,139.33

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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.