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Finding the Fourth Proportional to 86,855.70, 130,186.35 and 49,433.70

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Solution

The fourth proportional to 86,855.70, 130,186.35 and 49,433.70 is: 74,095.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,855.70 : 130,186.35 = 49,433.70 : x
  2. Step 2: Convert to fraction form
    86,855.70/130,186.35 = 49,433.70/x
  3. Step 3: Cross multiply
    86,855.70x = 130,186.35 × 49,433.70
  4. Step 4: Simplify right side
    86,855.70x = 6,435,592,970.00
  5. Step 5: Solve for x
    x = 6,435,592,970.00/86,855.70
  6. Step 6: Final answer
    x = 74,095.23

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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.