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Finding the Fourth Proportional to 70,358.78, 97,093.23 and 40,143.55

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Solution

The fourth proportional to 70,358.78, 97,093.23 and 40,143.55 is: 55,397.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,358.78 : 97,093.23 = 40,143.55 : x
  2. Step 2: Convert to fraction form
    70,358.78/97,093.23 = 40,143.55/x
  3. Step 3: Cross multiply
    70,358.78x = 97,093.23 × 40,143.55
  4. Step 4: Simplify right side
    70,358.78x = 3,897,666,947.75
  5. Step 5: Solve for x
    x = 3,897,666,947.75/70,358.78
  6. Step 6: Final answer
    x = 55,397.03

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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.