Home / 78,003,128.40-117,004,692.60-37,692,344.40

Finding the Fourth Proportional to 78,003,128.40, 117,004,692.60 and 37,692,344.40

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Solution

The fourth proportional to 78,003,128.40, 117,004,692.60 and 37,692,344.40 is: 56,538,516.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,003,128.40 : 117,004,692.60 = 37,692,344.40 : x
  2. Step 2: Convert to fraction form
    78,003,128.40/117,004,692.60 = 37,692,344.40/x
  3. Step 3: Cross multiply
    78,003,128.40x = 117,004,692.60 × 37,692,344.40
  4. Step 4: Simplify right side
    78,003,128.40x = 4,410,181,169,895,331
  5. Step 5: Solve for x
    x = 4,410,181,169,895,331/78,003,128.40
  6. Step 6: Final answer
    x = 56,538,516.60

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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.