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Finding the Fourth Proportional to 86,871.76, 130,309.88 and 23,692.40

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Solution

The fourth proportional to 86,871.76, 130,309.88 and 23,692.40 is: 35,539.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,871.76 : 130,309.88 = 23,692.40 : x
  2. Step 2: Convert to fraction form
    86,871.76/130,309.88 = 23,692.40/x
  3. Step 3: Cross multiply
    86,871.76x = 130,309.88 × 23,692.40
  4. Step 4: Simplify right side
    86,871.76x = 3,087,353,800.91
  5. Step 5: Solve for x
    x = 3,087,353,800.91/86,871.76
  6. Step 6: Final answer
    x = 35,539.21

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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.