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Finding the Fourth Proportional to 86,073.66, 118,781.19 and 47,312.37

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Solution

The fourth proportional to 86,073.66, 118,781.19 and 47,312.37 is: 65,290.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,073.66 : 118,781.19 = 47,312.37 : x
  2. Step 2: Convert to fraction form
    86,073.66/118,781.19 = 47,312.37/x
  3. Step 3: Cross multiply
    86,073.66x = 118,781.19 × 47,312.37
  4. Step 4: Simplify right side
    86,073.66x = 5,619,819,610.32
  5. Step 5: Solve for x
    x = 5,619,819,610.32/86,073.66
  6. Step 6: Final answer
    x = 65,290.82

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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.