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Finding the Fourth Proportional to 86,405.88, 129,659.22 and 46,967.16

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Solution

The fourth proportional to 86,405.88, 129,659.22 and 46,967.16 is: 70,478.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,405.88 : 129,659.22 = 46,967.16 : x
  2. Step 2: Convert to fraction form
    86,405.88/129,659.22 = 46,967.16/x
  3. Step 3: Cross multiply
    86,405.88x = 129,659.22 × 46,967.16
  4. Step 4: Simplify right side
    86,405.88x = 6,089,725,331.22
  5. Step 5: Solve for x
    x = 6,089,725,331.22/86,405.88
  6. Step 6: Final answer
    x = 70,478.14

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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.