Home / 86,990.75-130,454.12-30,050.16

Finding the Fourth Proportional to 86,990.75, 130,454.12 and 30,050.16

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Solution

The fourth proportional to 86,990.75, 130,454.12 and 30,050.16 is: 45,064.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,990.75 : 130,454.12 = 30,050.16 : x
  2. Step 2: Convert to fraction form
    86,990.75/130,454.12 = 30,050.16/x
  3. Step 3: Cross multiply
    86,990.75x = 130,454.12 × 30,050.16
  4. Step 4: Simplify right side
    86,990.75x = 3,920,167,780.77
  5. Step 5: Solve for x
    x = 3,920,167,780.77/86,990.75
  6. Step 6: Final answer
    x = 45,064.19

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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.