Home / 30,078.14-45,117.88-10,087.57

Finding the Fourth Proportional to 30,078.14, 45,117.88 and 10,087.57

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Solution

The fourth proportional to 30,078.14, 45,117.88 and 10,087.57 is: 15,131.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,078.14 : 45,117.88 = 10,087.57 : x
  2. Step 2: Convert to fraction form
    30,078.14/45,117.88 = 10,087.57/x
  3. Step 3: Cross multiply
    30,078.14x = 45,117.88 × 10,087.57
  4. Step 4: Simplify right side
    30,078.14x = 455,129,803.93
  5. Step 5: Solve for x
    x = 455,129,803.93/30,078.14
  6. Step 6: Final answer
    x = 15,131.58

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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.