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Finding the Fourth Proportional to 72,307.15, 99,795.81 and 49,627.51

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Solution

The fourth proportional to 72,307.15, 99,795.81 and 49,627.51 is: 68,494.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,307.15 : 99,795.81 = 49,627.51 : x
  2. Step 2: Convert to fraction form
    72,307.15/99,795.81 = 49,627.51/x
  3. Step 3: Cross multiply
    72,307.15x = 99,795.81 × 49,627.51
  4. Step 4: Simplify right side
    72,307.15x = 4,952,617,558.73
  5. Step 5: Solve for x
    x = 4,952,617,558.73/72,307.15
  6. Step 6: Final answer
    x = 68,494.16

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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.