Home / 78,298,670.40-117,448,005.60-51,088,891.20

Finding the Fourth Proportional to 78,298,670.40, 117,448,005.60 and 51,088,891.20

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Solution

The fourth proportional to 78,298,670.40, 117,448,005.60 and 51,088,891.20 is: 76,633,336.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,298,670.40 : 117,448,005.60 = 51,088,891.20 : x
  2. Step 2: Convert to fraction form
    78,298,670.40/117,448,005.60 = 51,088,891.20/x
  3. Step 3: Cross multiply
    78,298,670.40x = 117,448,005.60 × 51,088,891.20
  4. Step 4: Simplify right side
    78,298,670.40x = 6,000,288,379,755,391
  5. Step 5: Solve for x
    x = 6,000,288,379,755,391/78,298,670.40
  6. Step 6: Final answer
    x = 76,633,336.80

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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.