Home / 78,287,411.80-117,431,117.70-49,188,064.60

Finding the Fourth Proportional to 78,287,411.80, 117,431,117.70 and 49,188,064.60

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Solution

The fourth proportional to 78,287,411.80, 117,431,117.70 and 49,188,064.60 is: 73,782,096.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287,411.80 : 117,431,117.70 = 49,188,064.60 : x
  2. Step 2: Convert to fraction form
    78,287,411.80/117,431,117.70 = 49,188,064.60/x
  3. Step 3: Cross multiply
    78,287,411.80x = 117,431,117.70 × 49,188,064.60
  4. Step 4: Simplify right side
    78,287,411.80x = 5,776,209,403,477,804
  5. Step 5: Solve for x
    x = 5,776,209,403,477,804/78,287,411.80
  6. Step 6: Final answer
    x = 73,782,096.90

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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.