Home / 78,610,486.89-108,490,544.43-47,258,685.69

Finding the Fourth Proportional to 78,610,486.89, 108,490,544.43 and 47,258,685.69

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Solution

The fourth proportional to 78,610,486.89, 108,490,544.43 and 47,258,685.69 is: 65,221,839.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,610,486.89 : 108,490,544.43 = 47,258,685.69 : x
  2. Step 2: Convert to fraction form
    78,610,486.89/108,490,544.43 = 47,258,685.69/x
  3. Step 3: Cross multiply
    78,610,486.89x = 108,490,544.43 × 47,258,685.69
  4. Step 4: Simplify right side
    78,610,486.89x = 5,127,120,539,554,350
  5. Step 5: Solve for x
    x = 5,127,120,539,554,350/78,610,486.89
  6. Step 6: Final answer
    x = 65,221,839.25

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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.