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Finding the Fourth Proportional to 86,633.34, 129,935.76 and 30,460.24

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Solution

The fourth proportional to 86,633.34, 129,935.76 and 30,460.24 is: 45,685.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,633.34 : 129,935.76 = 30,460.24 : x
  2. Step 2: Convert to fraction form
    86,633.34/129,935.76 = 30,460.24/x
  3. Step 3: Cross multiply
    86,633.34x = 129,935.76 × 30,460.24
  4. Step 4: Simplify right side
    86,633.34x = 3,957,874,434.18
  5. Step 5: Solve for x
    x = 3,957,874,434.18/86,633.34
  6. Step 6: Final answer
    x = 45,685.35

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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.