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Finding the Fourth Proportional to 56,643.83, 84,974.92 and 18,681.76

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Solution

The fourth proportional to 56,643.83, 84,974.92 and 18,681.76 is: 28,025.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,643.83 : 84,974.92 = 18,681.76 : x
  2. Step 2: Convert to fraction form
    56,643.83/84,974.92 = 18,681.76/x
  3. Step 3: Cross multiply
    56,643.83x = 84,974.92 × 18,681.76
  4. Step 4: Simplify right side
    56,643.83x = 1,587,481,061.46
  5. Step 5: Solve for x
    x = 1,587,481,061.46/56,643.83
  6. Step 6: Final answer
    x = 28,025.67

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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.