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Finding the Fourth Proportional to 85,991.40, 118,664.73 and 47,752.92

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Solution

The fourth proportional to 85,991.40, 118,664.73 and 47,752.92 is: 65,897.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,991.40 : 118,664.73 = 47,752.92 : x
  2. Step 2: Convert to fraction form
    85,991.40/118,664.73 = 47,752.92/x
  3. Step 3: Cross multiply
    85,991.40x = 118,664.73 × 47,752.92
  4. Step 4: Simplify right side
    85,991.40x = 5,666,587,358.51
  5. Step 5: Solve for x
    x = 5,666,587,358.51/85,991.40
  6. Step 6: Final answer
    x = 65,897.14

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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.