Home / 71,829,981.78-99,125,373.09-38,790,228.21

Finding the Fourth Proportional to 71,829,981.78, 99,125,373.09 and 38,790,228.21

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Solution

The fourth proportional to 71,829,981.78, 99,125,373.09 and 38,790,228.21 is: 53,530,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,829,981.78 : 99,125,373.09 = 38,790,228.21 : x
  2. Step 2: Convert to fraction form
    71,829,981.78/99,125,373.09 = 38,790,228.21/x
  3. Step 3: Cross multiply
    71,829,981.78x = 99,125,373.09 × 38,790,228.21
  4. Step 4: Simplify right side
    71,829,981.78x = 3,845,095,843,562,493
  5. Step 5: Solve for x
    x = 3,845,095,843,562,493/71,829,981.78
  6. Step 6: Final answer
    x = 53,530,513.98

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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.