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Finding the Fourth Proportional to 86,062.60, 129,055.02 and 30,660.04

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Solution

The fourth proportional to 86,062.60, 129,055.02 and 30,660.04 is: 45,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,062.60 : 129,055.02 = 30,660.04 : x
  2. Step 2: Convert to fraction form
    86,062.60/129,055.02 = 30,660.04/x
  3. Step 3: Cross multiply
    86,062.60x = 129,055.02 × 30,660.04
  4. Step 4: Simplify right side
    86,062.60x = 3,956,832,075.40
  5. Step 5: Solve for x
    x = 3,956,832,075.40/86,062.60
  6. Step 6: Final answer
    x = 45,976.21

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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.