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Finding the Fourth Proportional to 86,554.54, 129,490.26 and 65,555.26

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Solution

The fourth proportional to 86,554.54, 129,490.26 and 65,555.26 is: 98,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,554.54 : 129,490.26 = 65,555.26 : x
  2. Step 2: Convert to fraction form
    86,554.54/129,490.26 = 65,555.26/x
  3. Step 3: Cross multiply
    86,554.54x = 129,490.26 × 65,555.26
  4. Step 4: Simplify right side
    86,554.54x = 8,488,767,661.77
  5. Step 5: Solve for x
    x = 8,488,767,661.77/86,554.54
  6. Step 6: Final answer
    x = 98,074.20

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1.5x scale

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.