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Finding the Fourth Proportional to 86,141.79, 118,875.77 and 47,900.91

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Solution

The fourth proportional to 86,141.79, 118,875.77 and 47,900.91 is: 66,103.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,141.79 : 118,875.77 = 47,900.91 : x
  2. Step 2: Convert to fraction form
    86,141.79/118,875.77 = 47,900.91/x
  3. Step 3: Cross multiply
    86,141.79x = 118,875.77 × 47,900.91
  4. Step 4: Simplify right side
    86,141.79x = 5,694,257,320.45
  5. Step 5: Solve for x
    x = 5,694,257,320.45/86,141.79
  6. Step 6: Final answer
    x = 66,103.31

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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.