Home / 30,579,978.68-42,200,358.40-16,828,942.80

Finding the Fourth Proportional to 30,579,978.68, 42,200,358.40 and 16,828,942.80

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Solution

The fourth proportional to 30,579,978.68, 42,200,358.40 and 16,828,942.80 is: 23,223,934.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579,978.68 : 42,200,358.40 = 16,828,942.80 : x
  2. Step 2: Convert to fraction form
    30,579,978.68/42,200,358.40 = 16,828,942.80/x
  3. Step 3: Cross multiply
    30,579,978.68x = 42,200,358.40 × 16,828,942.80
  4. Step 4: Simplify right side
    30,579,978.68x = 710,187,417,653,099.50
  5. Step 5: Solve for x
    x = 710,187,417,653,099.50/30,579,978.68
  6. Step 6: Final answer
    x = 23,223,934.36

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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.