Home / 55,119.20-76,070.40-31,243.28

Finding the Fourth Proportional to 55,119.20, 76,070.40 and 31,243.28

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Solution

The fourth proportional to 55,119.20, 76,070.40 and 31,243.28 is: 43,119.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,119.20 : 76,070.40 = 31,243.28 : x
  2. Step 2: Convert to fraction form
    55,119.20/76,070.40 = 31,243.28/x
  3. Step 3: Cross multiply
    55,119.20x = 76,070.40 × 31,243.28
  4. Step 4: Simplify right side
    55,119.20x = 2,376,688,806.91
  5. Step 5: Solve for x
    x = 2,376,688,806.91/55,119.20
  6. Step 6: Final answer
    x = 43,119.07

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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.