Home / 79,739,912.40-119,609,868.60-39,429,128.40

Finding the Fourth Proportional to 79,739,912.40, 119,609,868.60 and 39,429,128.40

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Solution

The fourth proportional to 79,739,912.40, 119,609,868.60 and 39,429,128.40 is: 59,143,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,739,912.40 : 119,609,868.60 = 39,429,128.40 : x
  2. Step 2: Convert to fraction form
    79,739,912.40/119,609,868.60 = 39,429,128.40/x
  3. Step 3: Cross multiply
    79,739,912.40x = 119,609,868.60 × 39,429,128.40
  4. Step 4: Simplify right side
    79,739,912.40x = 4,716,112,866,936,528
  5. Step 5: Solve for x
    x = 4,716,112,866,936,528/79,739,912.40
  6. Step 6: Final answer
    x = 59,143,692.60

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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.