Home / 86,016,868.80-128,941,322.40-76,946,942.40

Finding the Fourth Proportional to 86,016,868.80, 128,941,322.40 and 76,946,942.40

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Solution

The fourth proportional to 86,016,868.80, 128,941,322.40 and 76,946,942.40 is: 115,345,288.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,016,868.80 : 128,941,322.40 = 76,946,942.40 : x
  2. Step 2: Convert to fraction form
    86,016,868.80/128,941,322.40 = 76,946,942.40/x
  3. Step 3: Cross multiply
    86,016,868.80x = 128,941,322.40 × 76,946,942.40
  4. Step 4: Simplify right side
    86,016,868.80x = 9,921,640,507,692,630
  5. Step 5: Solve for x
    x = 9,921,640,507,692,630/86,016,868.80
  6. Step 6: Final answer
    x = 115,345,288.04

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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.