Home / 78,480,272-117,686,057.52-39,594,799.64

Finding the Fourth Proportional to 78,480,272, 117,686,057.52 and 39,594,799.64

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Solution

The fourth proportional to 78,480,272, 117,686,057.52 and 39,594,799.64 is: 59,374,868.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,480,272 : 117,686,057.52 = 39,594,799.64 : x
  2. Step 2: Convert to fraction form
    78,480,272/117,686,057.52 = 39,594,799.64/x
  3. Step 3: Cross multiply
    78,480,272x = 117,686,057.52 × 39,594,799.64
  4. Step 4: Simplify right side
    78,480,272x = 4,659,755,867,925,915
  5. Step 5: Solve for x
    x = 4,659,755,867,925,915/78,480,272
  6. Step 6: Final answer
    x = 59,374,868.99

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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.