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Finding the Fourth Proportional to 86,305.60, 129,458.40 and 50,730.40

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Solution

The fourth proportional to 86,305.60, 129,458.40 and 50,730.40 is: 76,095.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,305.60 : 129,458.40 = 50,730.40 : x
  2. Step 2: Convert to fraction form
    86,305.60/129,458.40 = 50,730.40/x
  3. Step 3: Cross multiply
    86,305.60x = 129,458.40 × 50,730.40
  4. Step 4: Simplify right side
    86,305.60x = 6,567,476,415.36
  5. Step 5: Solve for x
    x = 6,567,476,415.36/86,305.60
  6. Step 6: Final answer
    x = 76,095.60

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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.