Home / 72,171,121.40-99,589,988.94-40,807,633.40

Finding the Fourth Proportional to 72,171,121.40, 99,589,988.94 and 40,807,633.40

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Solution

The fourth proportional to 72,171,121.40, 99,589,988.94 and 40,807,633.40 is: 56,311,051.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,121.40 : 99,589,988.94 = 40,807,633.40 : x
  2. Step 2: Convert to fraction form
    72,171,121.40/99,589,988.94 = 40,807,633.40/x
  3. Step 3: Cross multiply
    72,171,121.40x = 99,589,988.94 × 40,807,633.40
  4. Step 4: Simplify right side
    72,171,121.40x = 4,064,031,758,973,574.50
  5. Step 5: Solve for x
    x = 4,064,031,758,973,574.50/72,171,121.40
  6. Step 6: Final answer
    x = 56,311,051.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.