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Finding the Fourth Proportional to 72,458.61, 99,887.90 and 50,882.64

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Solution

The fourth proportional to 72,458.61, 99,887.90 and 50,882.64 is: 70,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,458.61 : 99,887.90 = 50,882.64 : x
  2. Step 2: Convert to fraction form
    72,458.61/99,887.90 = 50,882.64/x
  3. Step 3: Cross multiply
    72,458.61x = 99,887.90 × 50,882.64
  4. Step 4: Simplify right side
    72,458.61x = 5,082,559,801.64
  5. Step 5: Solve for x
    x = 5,082,559,801.64/72,458.61
  6. Step 6: Final answer
    x = 70,144.32

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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.