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Finding the Fourth Proportional to 86,054.86, 118,755.32 and 47,820.63

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Solution

The fourth proportional to 86,054.86, 118,755.32 and 47,820.63 is: 65,992.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,054.86 : 118,755.32 = 47,820.63 : x
  2. Step 2: Convert to fraction form
    86,054.86/118,755.32 = 47,820.63/x
  3. Step 3: Cross multiply
    86,054.86x = 118,755.32 × 47,820.63
  4. Step 4: Simplify right side
    86,054.86x = 5,678,953,979.15
  5. Step 5: Solve for x
    x = 5,678,953,979.15/86,054.86
  6. Step 6: Final answer
    x = 65,992.25

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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.