Home / 78,178,643.70-107,841,704.80-48,758,900.04

Finding the Fourth Proportional to 78,178,643.70, 107,841,704.80 and 48,758,900.04

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Solution

The fourth proportional to 78,178,643.70, 107,841,704.80 and 48,758,900.04 is: 67,259,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,178,643.70 : 107,841,704.80 = 48,758,900.04 : x
  2. Step 2: Convert to fraction form
    78,178,643.70/107,841,704.80 = 48,758,900.04/x
  3. Step 3: Cross multiply
    78,178,643.70x = 107,841,704.80 × 48,758,900.04
  4. Step 4: Simplify right side
    78,178,643.70x = 5,258,242,904,486,388
  5. Step 5: Solve for x
    x = 5,258,242,904,486,388/78,178,643.70
  6. Step 6: Final answer
    x = 67,259,326.28

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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.