Home / 55,390.48-76,439.28-30,240.64

Finding the Fourth Proportional to 55,390.48, 76,439.28 and 30,240.64

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Solution

The fourth proportional to 55,390.48, 76,439.28 and 30,240.64 is: 41,732.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,390.48 : 76,439.28 = 30,240.64 : x
  2. Step 2: Convert to fraction form
    55,390.48/76,439.28 = 30,240.64/x
  3. Step 3: Cross multiply
    55,390.48x = 76,439.28 × 30,240.64
  4. Step 4: Simplify right side
    55,390.48x = 2,311,572,748.34
  5. Step 5: Solve for x
    x = 2,311,572,748.34/55,390.48
  6. Step 6: Final answer
    x = 41,732.31

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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.