Home / 78,802,090.77-118,275,797.40-39,967,797.85

Finding the Fourth Proportional to 78,802,090.77, 118,275,797.40 and 39,967,797.85

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Solution

The fourth proportional to 78,802,090.77, 118,275,797.40 and 39,967,797.85 is: 59,988,549.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,802,090.77 : 118,275,797.40 = 39,967,797.85 : x
  2. Step 2: Convert to fraction form
    78,802,090.77/118,275,797.40 = 39,967,797.85/x
  3. Step 3: Cross multiply
    78,802,090.77x = 118,275,797.40 × 39,967,797.85
  4. Step 4: Simplify right side
    78,802,090.77x = 4,727,223,161,587,934
  5. Step 5: Solve for x
    x = 4,727,223,161,587,934/78,802,090.77
  6. Step 6: Final answer
    x = 59,988,549.99

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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.