Home / 78,424,133.45-117,528,582.15-49,618,702.85

Finding the Fourth Proportional to 78,424,133.45, 117,528,582.15 and 49,618,702.85

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Solution

The fourth proportional to 78,424,133.45, 117,528,582.15 and 49,618,702.85 is: 74,359,964.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,424,133.45 : 117,528,582.15 = 49,618,702.85 : x
  2. Step 2: Convert to fraction form
    78,424,133.45/117,528,582.15 = 49,618,702.85/x
  3. Step 3: Cross multiply
    78,424,133.45x = 117,528,582.15 × 49,618,702.85
  4. Step 4: Simplify right side
    78,424,133.45x = 5,831,615,793,495,021
  5. Step 5: Solve for x
    x = 5,831,615,793,495,021/78,424,133.45
  6. Step 6: Final answer
    x = 74,359,964.69

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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.