Home / 85,606.31-118,137.12-47,880.56

Finding the Fourth Proportional to 85,606.31, 118,137.12 and 47,880.56

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Solution

The fourth proportional to 85,606.31, 118,137.12 and 47,880.56 is: 66,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,606.31 : 118,137.12 = 47,880.56 : x
  2. Step 2: Convert to fraction form
    85,606.31/118,137.12 = 47,880.56/x
  3. Step 3: Cross multiply
    85,606.31x = 118,137.12 × 47,880.56
  4. Step 4: Simplify right side
    85,606.31x = 5,656,471,578.18
  5. Step 5: Solve for x
    x = 5,656,471,578.18/85,606.31
  6. Step 6: Final answer
    x = 66,075.40

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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.