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Finding the Fourth Proportional to 86,026.88, 118,713.92 and 47,788.16

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Solution

The fourth proportional to 86,026.88, 118,713.92 and 47,788.16 is: 65,945.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,026.88 : 118,713.92 = 47,788.16 : x
  2. Step 2: Convert to fraction form
    86,026.88/118,713.92 = 47,788.16/x
  3. Step 3: Cross multiply
    86,026.88x = 118,713.92 × 47,788.16
  4. Step 4: Simplify right side
    86,026.88x = 5,673,119,803.19
  5. Step 5: Solve for x
    x = 5,673,119,803.19/86,026.88
  6. Step 6: Final answer
    x = 65,945.90

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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.