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Finding the Fourth Proportional to 57,031.60, 85,417.80 and 36,036.40

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Solution

The fourth proportional to 57,031.60, 85,417.80 and 36,036.40 is: 53,972.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,031.60 : 85,417.80 = 36,036.40 : x
  2. Step 2: Convert to fraction form
    57,031.60/85,417.80 = 36,036.40/x
  3. Step 3: Cross multiply
    57,031.60x = 85,417.80 × 36,036.40
  4. Step 4: Simplify right side
    57,031.60x = 3,078,150,007.92
  5. Step 5: Solve for x
    x = 3,078,150,007.92/57,031.60
  6. Step 6: Final answer
    x = 53,972.71

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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.