Home / 39,977,146.50-55,168,470.81-21,642,582.66

Finding the Fourth Proportional to 39,977,146.50, 55,168,470.81 and 21,642,582.66

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Solution

The fourth proportional to 39,977,146.50, 55,168,470.81 and 21,642,582.66 is: 29,866,768.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,977,146.50 : 55,168,470.81 = 21,642,582.66 : x
  2. Step 2: Convert to fraction form
    39,977,146.50/55,168,470.81 = 21,642,582.66/x
  3. Step 3: Cross multiply
    39,977,146.50x = 55,168,470.81 × 21,642,582.66
  4. Step 4: Simplify right side
    39,977,146.50x = 1,193,988,189,731,222.25
  5. Step 5: Solve for x
    x = 1,193,988,189,731,222.25/39,977,146.50
  6. Step 6: Final answer
    x = 29,866,768.75

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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.