Home / 55,607.09-76,721.69-31,406.76

Finding the Fourth Proportional to 55,607.09, 76,721.69 and 31,406.76

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Solution

The fourth proportional to 55,607.09, 76,721.69 and 31,406.76 is: 43,332.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,607.09 : 76,721.69 = 31,406.76 : x
  2. Step 2: Convert to fraction form
    55,607.09/76,721.69 = 31,406.76/x
  3. Step 3: Cross multiply
    55,607.09x = 76,721.69 × 31,406.76
  4. Step 4: Simplify right side
    55,607.09x = 2,409,579,783.14
  5. Step 5: Solve for x
    x = 2,409,579,783.14/55,607.09
  6. Step 6: Final answer
    x = 43,332.24

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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.