Home / 42,623,999.70-63,935,999.55-18,689,471.70

Finding the Fourth Proportional to 42,623,999.70, 63,935,999.55 and 18,689,471.70

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Solution

The fourth proportional to 42,623,999.70, 63,935,999.55 and 18,689,471.70 is: 28,034,207.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,623,999.70 : 63,935,999.55 = 18,689,471.70 : x
  2. Step 2: Convert to fraction form
    42,623,999.70/63,935,999.55 = 18,689,471.70/x
  3. Step 3: Cross multiply
    42,623,999.70x = 63,935,999.55 × 18,689,471.70
  4. Step 4: Simplify right side
    42,623,999.70x = 1,194,930,054,200,937.75
  5. Step 5: Solve for x
    x = 1,194,930,054,200,937.75/42,623,999.70
  6. Step 6: Final answer
    x = 28,034,207.55

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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.