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Finding the Fourth Proportional to 72,353.78, 99,848.97 and 40,089.39

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Solution

The fourth proportional to 72,353.78, 99,848.97 and 40,089.39 is: 55,323.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,353.78 : 99,848.97 = 40,089.39 : x
  2. Step 2: Convert to fraction form
    72,353.78/99,848.97 = 40,089.39/x
  3. Step 3: Cross multiply
    72,353.78x = 99,848.97 × 40,089.39
  4. Step 4: Simplify right side
    72,353.78x = 4,002,883,800.18
  5. Step 5: Solve for x
    x = 4,002,883,800.18/72,353.78
  6. Step 6: Final answer
    x = 55,323.77

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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.