Home / 105,579.38-145,699.58-57,834.45

Finding the Fourth Proportional to 105,579.38, 145,699.58 and 57,834.45

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Solution

The fourth proportional to 105,579.38, 145,699.58 and 57,834.45 is: 79,811.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,579.38 : 145,699.58 = 57,834.45 : x
  2. Step 2: Convert to fraction form
    105,579.38/145,699.58 = 57,834.45/x
  3. Step 3: Cross multiply
    105,579.38x = 145,699.58 × 57,834.45
  4. Step 4: Simplify right side
    105,579.38x = 8,426,455,219.12
  5. Step 5: Solve for x
    x = 8,426,455,219.12/105,579.38
  6. Step 6: Final answer
    x = 79,811.56

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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.