Home / 72,302,428.88-99,779,650.44-39,707,380.88

Finding the Fourth Proportional to 72,302,428.88, 99,779,650.44 and 39,707,380.88

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Solution

The fourth proportional to 72,302,428.88, 99,779,650.44 and 39,707,380.88 is: 54,797,447.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,302,428.88 : 99,779,650.44 = 39,707,380.88 : x
  2. Step 2: Convert to fraction form
    72,302,428.88/99,779,650.44 = 39,707,380.88/x
  3. Step 3: Cross multiply
    72,302,428.88x = 99,779,650.44 × 39,707,380.88
  4. Step 4: Simplify right side
    72,302,428.88x = 3,961,988,584,094,340
  5. Step 5: Solve for x
    x = 3,961,988,584,094,340/72,302,428.88
  6. Step 6: Final answer
    x = 54,797,447.96

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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.