Home / 105,488.07-145,573.68-57,744.43

Finding the Fourth Proportional to 105,488.07, 145,573.68 and 57,744.43

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Solution

The fourth proportional to 105,488.07, 145,573.68 and 57,744.43 is: 79,687.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,488.07 : 145,573.68 = 57,744.43 : x
  2. Step 2: Convert to fraction form
    105,488.07/145,573.68 = 57,744.43/x
  3. Step 3: Cross multiply
    105,488.07x = 145,573.68 × 57,744.43
  4. Step 4: Simplify right side
    105,488.07x = 8,406,069,174.60
  5. Step 5: Solve for x
    x = 8,406,069,174.60/105,488.07
  6. Step 6: Final answer
    x = 79,687.39

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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.