Home / 65,631.12-90,577.74-40,154.46

Finding the Fourth Proportional to 65,631.12, 90,577.74 and 40,154.46

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Solution

The fourth proportional to 65,631.12, 90,577.74 and 40,154.46 is: 55,417.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,631.12 : 90,577.74 = 40,154.46 : x
  2. Step 2: Convert to fraction form
    65,631.12/90,577.74 = 40,154.46/x
  3. Step 3: Cross multiply
    65,631.12x = 90,577.74 × 40,154.46
  4. Step 4: Simplify right side
    65,631.12x = 3,637,100,237.72
  5. Step 5: Solve for x
    x = 3,637,100,237.72/65,631.12
  6. Step 6: Final answer
    x = 55,417.31

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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.