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Finding the Fourth Proportional to 86,032.71, 118,768.31 and 53,785.25

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Solution

The fourth proportional to 86,032.71, 118,768.31 and 53,785.25 is: 74,250.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,032.71 : 118,768.31 = 53,785.25 : x
  2. Step 2: Convert to fraction form
    86,032.71/118,768.31 = 53,785.25/x
  3. Step 3: Cross multiply
    86,032.71x = 118,768.31 × 53,785.25
  4. Step 4: Simplify right side
    86,032.71x = 6,387,983,029.74
  5. Step 5: Solve for x
    x = 6,387,983,029.74/86,032.71
  6. Step 6: Final answer
    x = 74,250.63

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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.