Home / 72,769,611.70-109,154,417.55-69,899,830.30

Finding the Fourth Proportional to 72,769,611.70, 109,154,417.55 and 69,899,830.30

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Solution

The fourth proportional to 72,769,611.70, 109,154,417.55 and 69,899,830.30 is: 104,849,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769,611.70 : 109,154,417.55 = 69,899,830.30 : x
  2. Step 2: Convert to fraction form
    72,769,611.70/109,154,417.55 = 69,899,830.30/x
  3. Step 3: Cross multiply
    72,769,611.70x = 109,154,417.55 × 69,899,830.30
  4. Step 4: Simplify right side
    72,769,611.70x = 7,629,875,263,240,341
  5. Step 5: Solve for x
    x = 7,629,875,263,240,341/72,769,611.70
  6. Step 6: Final answer
    x = 104,849,745.45

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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.