Home / 65,731.12-90,703.80-37,431.28

Finding the Fourth Proportional to 65,731.12, 90,703.80 and 37,431.28

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Solution

The fourth proportional to 65,731.12, 90,703.80 and 37,431.28 is: 51,652.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,731.12 : 90,703.80 = 37,431.28 : x
  2. Step 2: Convert to fraction form
    65,731.12/90,703.80 = 37,431.28/x
  3. Step 3: Cross multiply
    65,731.12x = 90,703.80 × 37,431.28
  4. Step 4: Simplify right side
    65,731.12x = 3,395,159,334.86
  5. Step 5: Solve for x
    x = 3,395,159,334.86/65,731.12
  6. Step 6: Final answer
    x = 51,652.24

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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.