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Finding the Fourth Proportional to 57,641.63, 79,545.44 and 31,145.63

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Solution

The fourth proportional to 57,641.63, 79,545.44 and 31,145.63 is: 42,980.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,641.63 : 79,545.44 = 31,145.63 : x
  2. Step 2: Convert to fraction form
    57,641.63/79,545.44 = 31,145.63/x
  3. Step 3: Cross multiply
    57,641.63x = 79,545.44 × 31,145.63
  4. Step 4: Simplify right side
    57,641.63x = 2,477,492,522.56
  5. Step 5: Solve for x
    x = 2,477,492,522.56/57,641.63
  6. Step 6: Final answer
    x = 42,980.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.