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Finding the Fourth Proportional to 86,952.21, 130,191.18 and 65,828.35

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Solution

The fourth proportional to 86,952.21, 130,191.18 and 65,828.35 is: 98,563.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,952.21 : 130,191.18 = 65,828.35 : x
  2. Step 2: Convert to fraction form
    86,952.21/130,191.18 = 65,828.35/x
  3. Step 3: Cross multiply
    86,952.21x = 130,191.18 × 65,828.35
  4. Step 4: Simplify right side
    86,952.21x = 8,570,270,563.95
  5. Step 5: Solve for x
    x = 8,570,270,563.95/86,952.21
  6. Step 6: Final answer
    x = 98,563.00

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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.