Home / 72,769,565.70-109,154,348.55-69,899,784.30

Finding the Fourth Proportional to 72,769,565.70, 109,154,348.55 and 69,899,784.30

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Solution

The fourth proportional to 72,769,565.70, 109,154,348.55 and 69,899,784.30 is: 104,849,676.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769,565.70 : 109,154,348.55 = 69,899,784.30 : x
  2. Step 2: Convert to fraction form
    72,769,565.70/109,154,348.55 = 69,899,784.30/x
  3. Step 3: Cross multiply
    72,769,565.70x = 109,154,348.55 × 69,899,784.30
  4. Step 4: Simplify right side
    72,769,565.70x = 7,629,865,419,052,017
  5. Step 5: Solve for x
    x = 7,629,865,419,052,017/72,769,565.70
  6. Step 6: Final answer
    x = 104,849,676.45

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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.