Home / 71,864.15-99,172.49-39,599.21

Finding the Fourth Proportional to 71,864.15, 99,172.49 and 39,599.21

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Solution

The fourth proportional to 71,864.15, 99,172.49 and 39,599.21 is: 54,646.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,864.15 : 99,172.49 = 39,599.21 : x
  2. Step 2: Convert to fraction form
    71,864.15/99,172.49 = 39,599.21/x
  3. Step 3: Cross multiply
    71,864.15x = 99,172.49 × 39,599.21
  4. Step 4: Simplify right side
    71,864.15x = 3,927,152,307.67
  5. Step 5: Solve for x
    x = 3,927,152,307.67/71,864.15
  6. Step 6: Final answer
    x = 54,646.89

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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.