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Finding the Fourth Proportional to 71,785.94, 99,151.65 and 52,638.08

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Solution

The fourth proportional to 71,785.94, 99,151.65 and 52,638.08 is: 72,704.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,785.94 : 99,151.65 = 52,638.08 : x
  2. Step 2: Convert to fraction form
    71,785.94/99,151.65 = 52,638.08/x
  3. Step 3: Cross multiply
    71,785.94x = 99,151.65 × 52,638.08
  4. Step 4: Simplify right side
    71,785.94x = 5,219,151,989.07
  5. Step 5: Solve for x
    x = 5,219,151,989.07/71,785.94
  6. Step 6: Final answer
    x = 72,704.38

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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.