Home / 85,605.98-118,135.61-47,880.23

Finding the Fourth Proportional to 85,605.98, 118,135.61 and 47,880.23

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Solution

The fourth proportional to 85,605.98, 118,135.61 and 47,880.23 is: 66,074.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,605.98 : 118,135.61 = 47,880.23 : x
  2. Step 2: Convert to fraction form
    85,605.98/118,135.61 = 47,880.23/x
  3. Step 3: Cross multiply
    85,605.98x = 118,135.61 × 47,880.23
  4. Step 4: Simplify right side
    85,605.98x = 5,656,360,177.99
  5. Step 5: Solve for x
    x = 5,656,360,177.99/85,605.98
  6. Step 6: Final answer
    x = 66,074.36

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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.