Home / 55,303.28-76,320.32-31,428.56

Finding the Fourth Proportional to 55,303.28, 76,320.32 and 31,428.56

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Solution

The fourth proportional to 55,303.28, 76,320.32 and 31,428.56 is: 43,372.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,303.28 : 76,320.32 = 31,428.56 : x
  2. Step 2: Convert to fraction form
    55,303.28/76,320.32 = 31,428.56/x
  3. Step 3: Cross multiply
    55,303.28x = 76,320.32 × 31,428.56
  4. Step 4: Simplify right side
    55,303.28x = 2,398,637,756.34
  5. Step 5: Solve for x
    x = 2,398,637,756.34/55,303.28
  6. Step 6: Final answer
    x = 43,372.43

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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.