Home / 78,357,093.20-117,535,639.80-42,525,285.20

Finding the Fourth Proportional to 78,357,093.20, 117,535,639.80 and 42,525,285.20

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Solution

The fourth proportional to 78,357,093.20, 117,535,639.80 and 42,525,285.20 is: 63,787,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,357,093.20 : 117,535,639.80 = 42,525,285.20 : x
  2. Step 2: Convert to fraction form
    78,357,093.20/117,535,639.80 = 42,525,285.20/x
  3. Step 3: Cross multiply
    78,357,093.20x = 117,535,639.80 × 42,525,285.20
  4. Step 4: Simplify right side
    78,357,093.20x = 4,998,236,603,659,471
  5. Step 5: Solve for x
    x = 4,998,236,603,659,471/78,357,093.20
  6. Step 6: Final answer
    x = 63,787,927.80

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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.