Home / 78,865,341.39-118,192,268.89-61,379,013.20

Finding the Fourth Proportional to 78,865,341.39, 118,192,268.89 and 61,379,013.20

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Solution

The fourth proportional to 78,865,341.39, 118,192,268.89 and 61,379,013.20 is: 91,986,222.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865,341.39 : 118,192,268.89 = 61,379,013.20 : x
  2. Step 2: Convert to fraction form
    78,865,341.39/118,192,268.89 = 61,379,013.20/x
  3. Step 3: Cross multiply
    78,865,341.39x = 118,192,268.89 × 61,379,013.20
  4. Step 4: Simplify right side
    78,865,341.39x = 7,254,524,832,647,498
  5. Step 5: Solve for x
    x = 7,254,524,832,647,498/78,865,341.39
  6. Step 6: Final answer
    x = 91,986,222.40

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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.