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Finding the Fourth Proportional to 72,295.69, 99,768.03 and 40,464.58

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Solution

The fourth proportional to 72,295.69, 99,768.03 and 40,464.58 is: 55,841.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,295.69 : 99,768.03 = 40,464.58 : x
  2. Step 2: Convert to fraction form
    72,295.69/99,768.03 = 40,464.58/x
  3. Step 3: Cross multiply
    72,295.69x = 99,768.03 × 40,464.58
  4. Step 4: Simplify right side
    72,295.69x = 4,037,071,431.38
  5. Step 5: Solve for x
    x = 4,037,071,431.38/72,295.69
  6. Step 6: Final answer
    x = 55,841.11

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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.