Home / 72,024,139.89-99,393,317.91-39,429,091.89

Finding the Fourth Proportional to 72,024,139.89, 99,393,317.91 and 39,429,091.89

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Solution

The fourth proportional to 72,024,139.89, 99,393,317.91 and 39,429,091.89 is: 54,412,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,024,139.89 : 99,393,317.91 = 39,429,091.89 : x
  2. Step 2: Convert to fraction form
    72,024,139.89/99,393,317.91 = 39,429,091.89/x
  3. Step 3: Cross multiply
    72,024,139.89x = 99,393,317.91 × 39,429,091.89
  4. Step 4: Simplify right side
    72,024,139.89x = 3,918,988,265,125,372.50
  5. Step 5: Solve for x
    x = 3,918,988,265,125,372.50/72,024,139.89
  6. Step 6: Final answer
    x = 54,412,149.47

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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.