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Finding the Fourth Proportional to 86,055.81, 129,083.10 and 50,970.25

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Solution

The fourth proportional to 86,055.81, 129,083.10 and 50,970.25 is: 76,455.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,055.81 : 129,083.10 = 50,970.25 : x
  2. Step 2: Convert to fraction form
    86,055.81/129,083.10 = 50,970.25/x
  3. Step 3: Cross multiply
    86,055.81x = 129,083.10 × 50,970.25
  4. Step 4: Simplify right side
    86,055.81x = 6,579,397,877.78
  5. Step 5: Solve for x
    x = 6,579,397,877.78/86,055.81
  6. Step 6: Final answer
    x = 76,455.01

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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.