Home / 30,943,395.50-42,703,038.21-18,555,505.79

Finding the Fourth Proportional to 30,943,395.50, 42,703,038.21 and 18,555,505.79

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Solution

The fourth proportional to 30,943,395.50, 42,703,038.21 and 18,555,505.79 is: 25,607,289.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,943,395.50 : 42,703,038.21 = 18,555,505.79 : x
  2. Step 2: Convert to fraction form
    30,943,395.50/42,703,038.21 = 18,555,505.79/x
  3. Step 3: Cross multiply
    30,943,395.50x = 42,703,038.21 × 18,555,505.79
  4. Step 4: Simplify right side
    30,943,395.50x = 792,376,472,756,246.25
  5. Step 5: Solve for x
    x = 792,376,472,756,246.25/30,943,395.50
  6. Step 6: Final answer
    x = 25,607,289.05

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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.