Home / 78,735,055.20-118,102,582.80-30,865,999.20

Finding the Fourth Proportional to 78,735,055.20, 118,102,582.80 and 30,865,999.20

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Solution

The fourth proportional to 78,735,055.20, 118,102,582.80 and 30,865,999.20 is: 46,298,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,735,055.20 : 118,102,582.80 = 30,865,999.20 : x
  2. Step 2: Convert to fraction form
    78,735,055.20/118,102,582.80 = 30,865,999.20/x
  3. Step 3: Cross multiply
    78,735,055.20x = 118,102,582.80 × 30,865,999.20
  4. Step 4: Simplify right side
    78,735,055.20x = 3,645,354,226,222,733.50
  5. Step 5: Solve for x
    x = 3,645,354,226,222,733.50/78,735,055.20
  6. Step 6: Final answer
    x = 46,298,998.80

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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.