Home / 78,865,335.40-118,192,259.92-61,379,007.21

Finding the Fourth Proportional to 78,865,335.40, 118,192,259.92 and 61,379,007.21

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Solution

The fourth proportional to 78,865,335.40, 118,192,259.92 and 61,379,007.21 is: 91,986,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,865,335.40 : 118,192,259.92 = 61,379,007.21 : x
  2. Step 2: Convert to fraction form
    78,865,335.40/118,192,259.92 = 61,379,007.21/x
  3. Step 3: Cross multiply
    78,865,335.40x = 118,192,259.92 × 61,379,007.21
  4. Step 4: Simplify right side
    78,865,335.40x = 7,254,523,573,526,579
  5. Step 5: Solve for x
    x = 7,254,523,573,526,579/78,865,335.40
  6. Step 6: Final answer
    x = 91,986,213.42

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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.