Home / 78,865,419.04-118,192,385.54-61,379,091.24

Finding the Fourth Proportional to 78,865,419.04, 118,192,385.54 and 61,379,091.24

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Solution

The fourth proportional to 78,865,419.04, 118,192,385.54 and 61,379,091.24 is: 91,986,339.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865,419.04 : 118,192,385.54 = 61,379,091.24 : x
  2. Step 2: Convert to fraction form
    78,865,419.04/118,192,385.54 = 61,379,091.24/x
  3. Step 3: Cross multiply
    78,865,419.04x = 118,192,385.54 × 61,379,091.24
  4. Step 4: Simplify right side
    78,865,419.04x = 7,254,541,215,932,917
  5. Step 5: Solve for x
    x = 7,254,541,215,932,917/78,865,419.04
  6. Step 6: Final answer
    x = 91,986,339.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.