Home / 55,157.40-76,119.12-31,283.28

Finding the Fourth Proportional to 55,157.40, 76,119.12 and 31,283.28

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Solution

The fourth proportional to 55,157.40, 76,119.12 and 31,283.28 is: 43,172.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,157.40 : 76,119.12 = 31,283.28 : x
  2. Step 2: Convert to fraction form
    55,157.40/76,119.12 = 31,283.28/x
  3. Step 3: Cross multiply
    55,157.40x = 76,119.12 × 31,283.28
  4. Step 4: Simplify right side
    55,157.40x = 2,381,255,744.31
  5. Step 5: Solve for x
    x = 2,381,255,744.31/55,157.40
  6. Step 6: Final answer
    x = 43,172.01

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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.