Home / 78,032,089.12-107,721,623.76-51,969,978.40

Finding the Fourth Proportional to 78,032,089.12, 107,721,623.76 and 51,969,978.40

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Solution

The fourth proportional to 78,032,089.12, 107,721,623.76 and 51,969,978.40 is: 71,743,439.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,032,089.12 : 107,721,623.76 = 51,969,978.40 : x
  2. Step 2: Convert to fraction form
    78,032,089.12/107,721,623.76 = 51,969,978.40/x
  3. Step 3: Cross multiply
    78,032,089.12x = 107,721,623.76 × 51,969,978.40
  4. Step 4: Simplify right side
    78,032,089.12x = 5,598,290,460,020,127
  5. Step 5: Solve for x
    x = 5,598,290,460,020,127/78,032,089.12
  6. Step 6: Final answer
    x = 71,743,439.44

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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.