Home / 78,357,059.20-117,535,588.80-42,525,251.20

Finding the Fourth Proportional to 78,357,059.20, 117,535,588.80 and 42,525,251.20

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Solution

The fourth proportional to 78,357,059.20, 117,535,588.80 and 42,525,251.20 is: 63,787,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,357,059.20 : 117,535,588.80 = 42,525,251.20 : x
  2. Step 2: Convert to fraction form
    78,357,059.20/117,535,588.80 = 42,525,251.20/x
  3. Step 3: Cross multiply
    78,357,059.20x = 117,535,588.80 × 42,525,251.20
  4. Step 4: Simplify right side
    78,357,059.20x = 4,998,230,438,659,907
  5. Step 5: Solve for x
    x = 4,998,230,438,659,907/78,357,059.20
  6. Step 6: Final answer
    x = 63,787,876.80

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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.