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Finding the Fourth Proportional to 86,004.34, 118,686.28 and 47,763.98

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Solution

The fourth proportional to 86,004.34, 118,686.28 and 47,763.98 is: 65,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004.34 : 118,686.28 = 47,763.98 : x
  2. Step 2: Convert to fraction form
    86,004.34/118,686.28 = 47,763.98/x
  3. Step 3: Cross multiply
    86,004.34x = 118,686.28 × 47,763.98
  4. Step 4: Simplify right side
    86,004.34x = 5,668,929,104.19
  5. Step 5: Solve for x
    x = 5,668,929,104.19/86,004.34
  6. Step 6: Final answer
    x = 65,914.45

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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.