Home / 78,868,500.55-118,302,750.83-65,431,572.55

Finding the Fourth Proportional to 78,868,500.55, 118,302,750.83 and 65,431,572.55

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Solution

The fourth proportional to 78,868,500.55, 118,302,750.83 and 65,431,572.55 is: 98,147,358.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,868,500.55 : 118,302,750.83 = 65,431,572.55 : x
  2. Step 2: Convert to fraction form
    78,868,500.55/118,302,750.83 = 65,431,572.55/x
  3. Step 3: Cross multiply
    78,868,500.55x = 118,302,750.83 × 65,431,572.55
  4. Step 4: Simplify right side
    78,868,500.55x = 7,740,735,023,470,560
  5. Step 5: Solve for x
    x = 7,740,735,023,470,560/78,868,500.55
  6. Step 6: Final answer
    x = 98,147,358.83

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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.