Home / 47,142-70,701.35-28,172.07

Finding the Fourth Proportional to 47,142, 70,701.35 and 28,172.07

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Solution

The fourth proportional to 47,142, 70,701.35 and 28,172.07 is: 42,251.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,142 : 70,701.35 = 28,172.07 : x
  2. Step 2: Convert to fraction form
    47,142/70,701.35 = 28,172.07/x
  3. Step 3: Cross multiply
    47,142x = 70,701.35 × 28,172.07
  4. Step 4: Simplify right side
    47,142x = 1,991,803,240.43
  5. Step 5: Solve for x
    x = 1,991,803,240.43/47,142
  6. Step 6: Final answer
    x = 42,251.14

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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.