Home / 78,899,431.80-118,265,166.90-30,358,529.40

Finding the Fourth Proportional to 78,899,431.80, 118,265,166.90 and 30,358,529.40

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Solution

The fourth proportional to 78,899,431.80, 118,265,166.90 and 30,358,529.40 is: 45,505,480.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,899,431.80 : 118,265,166.90 = 30,358,529.40 : x
  2. Step 2: Convert to fraction form
    78,899,431.80/118,265,166.90 = 30,358,529.40/x
  3. Step 3: Cross multiply
    78,899,431.80x = 118,265,166.90 × 30,358,529.40
  4. Step 4: Simplify right side
    78,899,431.80x = 3,590,356,546,329,557
  5. Step 5: Solve for x
    x = 3,590,356,546,329,557/78,899,431.80
  6. Step 6: Final answer
    x = 45,505,480.39

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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.