Home / 105,474.34-145,554.82-57,730.76

Finding the Fourth Proportional to 105,474.34, 145,554.82 and 57,730.76

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Solution

The fourth proportional to 105,474.34, 145,554.82 and 57,730.76 is: 79,668.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,474.34 : 145,554.82 = 57,730.76 : x
  2. Step 2: Convert to fraction form
    105,474.34/145,554.82 = 57,730.76/x
  3. Step 3: Cross multiply
    105,474.34x = 145,554.82 × 57,730.76
  4. Step 4: Simplify right side
    105,474.34x = 8,402,990,380.26
  5. Step 5: Solve for x
    x = 8,402,990,380.26/105,474.34
  6. Step 6: Final answer
    x = 79,668.58

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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.