Home / 86,121.69-118,844.24-47,881.19

Finding the Fourth Proportional to 86,121.69, 118,844.24 and 47,881.19

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Solution

The fourth proportional to 86,121.69, 118,844.24 and 47,881.19 is: 66,073.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,121.69 : 118,844.24 = 47,881.19 : x
  2. Step 2: Convert to fraction form
    86,121.69/118,844.24 = 47,881.19/x
  3. Step 3: Cross multiply
    86,121.69x = 118,844.24 × 47,881.19
  4. Step 4: Simplify right side
    86,121.69x = 5,690,402,802.22
  5. Step 5: Solve for x
    x = 5,690,402,802.22/86,121.69
  6. Step 6: Final answer
    x = 66,073.98

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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.