Home / 78,181,780.16-107,903,806.88-43,385,647.68

Finding the Fourth Proportional to 78,181,780.16, 107,903,806.88 and 43,385,647.68

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Solution

The fourth proportional to 78,181,780.16, 107,903,806.88 and 43,385,647.68 is: 59,879,380.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,181,780.16 : 107,903,806.88 = 43,385,647.68 : x
  2. Step 2: Convert to fraction form
    78,181,780.16/107,903,806.88 = 43,385,647.68/x
  3. Step 3: Cross multiply
    78,181,780.16x = 107,903,806.88 × 43,385,647.68
  4. Step 4: Simplify right side
    78,181,780.16x = 4,681,476,548,626,440
  5. Step 5: Solve for x
    x = 4,681,476,548,626,440/78,181,780.16
  6. Step 6: Final answer
    x = 59,879,380.32

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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.