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Finding the Fourth Proportional to 84,563.34, 126,835.26 and 28,401.18

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Solution

The fourth proportional to 84,563.34, 126,835.26 and 28,401.18 is: 42,598.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,563.34 : 126,835.26 = 28,401.18 : x
  2. Step 2: Convert to fraction form
    84,563.34/126,835.26 = 28,401.18/x
  3. Step 3: Cross multiply
    84,563.34x = 126,835.26 × 28,401.18
  4. Step 4: Simplify right side
    84,563.34x = 3,602,271,049.61
  5. Step 5: Solve for x
    x = 3,602,271,049.61/84,563.34
  6. Step 6: Final answer
    x = 42,598.50

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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.