Home / 105,566.44-145,681.32-57,819.64

Finding the Fourth Proportional to 105,566.44, 145,681.32 and 57,819.64

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Solution

The fourth proportional to 105,566.44, 145,681.32 and 57,819.64 is: 79,790.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,566.44 : 145,681.32 = 57,819.64 : x
  2. Step 2: Convert to fraction form
    105,566.44/145,681.32 = 57,819.64/x
  3. Step 3: Cross multiply
    105,566.44x = 145,681.32 × 57,819.64
  4. Step 4: Simplify right side
    105,566.44x = 8,423,241,477.12
  5. Step 5: Solve for x
    x = 8,423,241,477.12/105,566.44
  6. Step 6: Final answer
    x = 79,790.90

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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.