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Finding the Fourth Proportional to 86,548.80, 129,871.80 and 36,620.40

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Solution

The fourth proportional to 86,548.80, 129,871.80 and 36,620.40 is: 54,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,548.80 : 129,871.80 = 36,620.40 : x
  2. Step 2: Convert to fraction form
    86,548.80/129,871.80 = 36,620.40/x
  3. Step 3: Cross multiply
    86,548.80x = 129,871.80 × 36,620.40
  4. Step 4: Simplify right side
    86,548.80x = 4,755,957,264.72
  5. Step 5: Solve for x
    x = 4,755,957,264.72/86,548.80
  6. Step 6: Final answer
    x = 54,951.16

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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.