Home / 55,215.79-76,177.78-31,328.63

Finding the Fourth Proportional to 55,215.79, 76,177.78 and 31,328.63

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Solution

The fourth proportional to 55,215.79, 76,177.78 and 31,328.63 is: 43,222.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,215.79 : 76,177.78 = 31,328.63 : x
  2. Step 2: Convert to fraction form
    55,215.79/76,177.78 = 31,328.63/x
  3. Step 3: Cross multiply
    55,215.79x = 76,177.78 × 31,328.63
  4. Step 4: Simplify right side
    55,215.79x = 2,386,545,215.08
  5. Step 5: Solve for x
    x = 2,386,545,215.08/55,215.79
  6. Step 6: Final answer
    x = 43,222.15

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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.