Home / 28,081,817.90-42,122,726.85-18,340,045.10

Finding the Fourth Proportional to 28,081,817.90, 42,122,726.85 and 18,340,045.10

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Solution

The fourth proportional to 28,081,817.90, 42,122,726.85 and 18,340,045.10 is: 27,510,067.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,081,817.90 : 42,122,726.85 = 18,340,045.10 : x
  2. Step 2: Convert to fraction form
    28,081,817.90/42,122,726.85 = 18,340,045.10/x
  3. Step 3: Cross multiply
    28,081,817.90x = 42,122,726.85 × 18,340,045.10
  4. Step 4: Simplify right side
    28,081,817.90x = 772,532,710,163,981
  5. Step 5: Solve for x
    x = 772,532,710,163,981/28,081,817.90
  6. Step 6: Final answer
    x = 27,510,067.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.