Home / 65,641.10-90,586.51-40,147.00

Finding the Fourth Proportional to 65,641.10, 90,586.51 and 40,147.00

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Solution

The fourth proportional to 65,641.10, 90,586.51 and 40,147.00 is: 55,403.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,641.10 : 90,586.51 = 40,147.00 : x
  2. Step 2: Convert to fraction form
    65,641.10/90,586.51 = 40,147.00/x
  3. Step 3: Cross multiply
    65,641.10x = 90,586.51 × 40,147.00
  4. Step 4: Simplify right side
    65,641.10x = 3,636,776,382.06
  5. Step 5: Solve for x
    x = 3,636,776,382.06/65,641.10
  6. Step 6: Final answer
    x = 55,403.96

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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.