Home / 72,379,428.68-99,884,621.94-39,339,667.40

Finding the Fourth Proportional to 72,379,428.68, 99,884,621.94 and 39,339,667.40

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Solution

The fourth proportional to 72,379,428.68, 99,884,621.94 and 39,339,667.40 is: 54,289,290.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,379,428.68 : 99,884,621.94 = 39,339,667.40 : x
  2. Step 2: Convert to fraction form
    72,379,428.68/99,884,621.94 = 39,339,667.40/x
  3. Step 3: Cross multiply
    72,379,428.68x = 99,884,621.94 × 39,339,667.40
  4. Step 4: Simplify right side
    72,379,428.68x = 3,929,427,805,494,342.50
  5. Step 5: Solve for x
    x = 3,929,427,805,494,342.50/72,379,428.68
  6. Step 6: Final answer
    x = 54,289,290.16

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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.