Home / 78,427.53-117,619.43-56,174.81

Finding the Fourth Proportional to 78,427.53, 117,619.43 and 56,174.81

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Solution

The fourth proportional to 78,427.53, 117,619.43 and 56,174.81 is: 84,246.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,427.53 : 117,619.43 = 56,174.81 : x
  2. Step 2: Convert to fraction form
    78,427.53/117,619.43 = 56,174.81/x
  3. Step 3: Cross multiply
    78,427.53x = 117,619.43 × 56,174.81
  4. Step 4: Simplify right side
    78,427.53x = 6,607,248,263.59
  5. Step 5: Solve for x
    x = 6,607,248,263.59/78,427.53
  6. Step 6: Final answer
    x = 84,246.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.