Home / 78,178,642.70-107,841,703.42-48,758,899.04

Finding the Fourth Proportional to 78,178,642.70, 107,841,703.42 and 48,758,899.04

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Solution

The fourth proportional to 78,178,642.70, 107,841,703.42 and 48,758,899.04 is: 67,259,324.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,178,642.70 : 107,841,703.42 = 48,758,899.04 : x
  2. Step 2: Convert to fraction form
    78,178,642.70/107,841,703.42 = 48,758,899.04/x
  3. Step 3: Cross multiply
    78,178,642.70x = 107,841,703.42 × 48,758,899.04
  4. Step 4: Simplify right side
    78,178,642.70x = 5,258,242,729,357,403
  5. Step 5: Solve for x
    x = 5,258,242,729,357,403/78,178,642.70
  6. Step 6: Final answer
    x = 67,259,324.90

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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.