Home / 105,382.27-145,430.40-57,638.44

Finding the Fourth Proportional to 105,382.27, 145,430.40 and 57,638.44

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Solution

The fourth proportional to 105,382.27, 145,430.40 and 57,638.44 is: 79,542.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,382.27 : 145,430.40 = 57,638.44 : x
  2. Step 2: Convert to fraction form
    105,382.27/145,430.40 = 57,638.44/x
  3. Step 3: Cross multiply
    105,382.27x = 145,430.40 × 57,638.44
  4. Step 4: Simplify right side
    105,382.27x = 8,382,381,384.58
  5. Step 5: Solve for x
    x = 8,382,381,384.58/105,382.27
  6. Step 6: Final answer
    x = 79,542.62

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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.