Home / 66,472,606.70-99,708,910.05-43,779,128.30

Finding the Fourth Proportional to 66,472,606.70, 99,708,910.05 and 43,779,128.30

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Solution

The fourth proportional to 66,472,606.70, 99,708,910.05 and 43,779,128.30 is: 65,668,692.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472,606.70 : 99,708,910.05 = 43,779,128.30 : x
  2. Step 2: Convert to fraction form
    66,472,606.70/99,708,910.05 = 43,779,128.30/x
  3. Step 3: Cross multiply
    66,472,606.70x = 99,708,910.05 × 43,779,128.30
  4. Step 4: Simplify right side
    66,472,606.70x = 4,365,169,165,732,109
  5. Step 5: Solve for x
    x = 4,365,169,165,732,109/66,472,606.70
  6. Step 6: Final answer
    x = 65,668,692.45

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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.