Home / 55,423,989.28-76,483,908.30-30,643,223.68

Finding the Fourth Proportional to 55,423,989.28, 76,483,908.30 and 30,643,223.68

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Solution

The fourth proportional to 55,423,989.28, 76,483,908.30 and 30,643,223.68 is: 42,286,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,423,989.28 : 76,483,908.30 = 30,643,223.68 : x
  2. Step 2: Convert to fraction form
    55,423,989.28/76,483,908.30 = 30,643,223.68/x
  3. Step 3: Cross multiply
    55,423,989.28x = 76,483,908.30 × 30,643,223.68
  4. Step 4: Simplify right side
    55,423,989.28x = 2,343,713,509,957,508.50
  5. Step 5: Solve for x
    x = 2,343,713,509,957,508.50/55,423,989.28
  6. Step 6: Final answer
    x = 42,286,986.92

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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.