Home / 55,143.90-76,141.48-42,376.88

Finding the Fourth Proportional to 55,143.90, 76,141.48 and 42,376.88

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Solution

The fourth proportional to 55,143.90, 76,141.48 and 42,376.88 is: 58,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,143.90 : 76,141.48 = 42,376.88 : x
  2. Step 2: Convert to fraction form
    55,143.90/76,141.48 = 42,376.88/x
  3. Step 3: Cross multiply
    55,143.90x = 76,141.48 × 42,376.88
  4. Step 4: Simplify right side
    55,143.90x = 3,226,638,360.98
  5. Step 5: Solve for x
    x = 3,226,638,360.98/55,143.90
  6. Step 6: Final answer
    x = 58,513.06

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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.