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Finding the Fourth Proportional to 86,608, 129,903.60 and 58,707.36

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Solution

The fourth proportional to 86,608, 129,903.60 and 58,707.36 is: 88,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,608 : 129,903.60 = 58,707.36 : x
  2. Step 2: Convert to fraction form
    86,608/129,903.60 = 58,707.36/x
  3. Step 3: Cross multiply
    86,608x = 129,903.60 × 58,707.36
  4. Step 4: Simplify right side
    86,608x = 7,626,297,410.50
  5. Step 5: Solve for x
    x = 7,626,297,410.50/86,608
  6. Step 6: Final answer
    x = 88,055.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.