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Finding the Fourth Proportional to 74,786.08, 103,210.32 and 42,956.32

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Solution

The fourth proportional to 74,786.08, 103,210.32 and 42,956.32 is: 59,282.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,786.08 : 103,210.32 = 42,956.32 : x
  2. Step 2: Convert to fraction form
    74,786.08/103,210.32 = 42,956.32/x
  3. Step 3: Cross multiply
    74,786.08x = 103,210.32 × 42,956.32
  4. Step 4: Simplify right side
    74,786.08x = 4,433,535,533.22
  5. Step 5: Solve for x
    x = 4,433,535,533.22/74,786.08
  6. Step 6: Final answer
    x = 59,282.90

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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.