Home / 30,089.95-45,139.32-9,031.66

Finding the Fourth Proportional to 30,089.95, 45,139.32 and 9,031.66

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Solution

The fourth proportional to 30,089.95, 45,139.32 and 9,031.66 is: 13,548.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,089.95 : 45,139.32 = 9,031.66 : x
  2. Step 2: Convert to fraction form
    30,089.95/45,139.32 = 9,031.66/x
  3. Step 3: Cross multiply
    30,089.95x = 45,139.32 × 9,031.66
  4. Step 4: Simplify right side
    30,089.95x = 407,682,878.02
  5. Step 5: Solve for x
    x = 407,682,878.02/30,089.95
  6. Step 6: Final answer
    x = 13,548.81

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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.