Home / 78,912,133.60-118,368,200.40-57,245,087.20

Finding the Fourth Proportional to 78,912,133.60, 118,368,200.40 and 57,245,087.20

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Solution

The fourth proportional to 78,912,133.60, 118,368,200.40 and 57,245,087.20 is: 85,867,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,912,133.60 : 118,368,200.40 = 57,245,087.20 : x
  2. Step 2: Convert to fraction form
    78,912,133.60/118,368,200.40 = 57,245,087.20/x
  3. Step 3: Cross multiply
    78,912,133.60x = 118,368,200.40 × 57,245,087.20
  4. Step 4: Simplify right side
    78,912,133.60x = 6,775,997,953,605,076
  5. Step 5: Solve for x
    x = 6,775,997,953,605,076/78,912,133.60
  6. Step 6: Final answer
    x = 85,867,630.80

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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.