Home / 86,397.16-129,576.29-30,993.16

Finding the Fourth Proportional to 86,397.16, 129,576.29 and 30,993.16

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Solution

The fourth proportional to 86,397.16, 129,576.29 and 30,993.16 is: 46,482.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,397.16 : 129,576.29 = 30,993.16 : x
  2. Step 2: Convert to fraction form
    86,397.16/129,576.29 = 30,993.16/x
  3. Step 3: Cross multiply
    86,397.16x = 129,576.29 × 30,993.16
  4. Step 4: Simplify right side
    86,397.16x = 4,015,978,688.18
  5. Step 5: Solve for x
    x = 4,015,978,688.18/86,397.16
  6. Step 6: Final answer
    x = 46,482.76

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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.