Home / 72,171,120.40-99,589,987.56-40,807,632.40

Finding the Fourth Proportional to 72,171,120.40, 99,589,987.56 and 40,807,632.40

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Solution

The fourth proportional to 72,171,120.40, 99,589,987.56 and 40,807,632.40 is: 56,311,050.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,120.40 : 99,589,987.56 = 40,807,632.40 : x
  2. Step 2: Convert to fraction form
    72,171,120.40/99,589,987.56 = 40,807,632.40/x
  3. Step 3: Cross multiply
    72,171,120.40x = 99,589,987.56 × 40,807,632.40
  4. Step 4: Simplify right side
    72,171,120.40x = 4,064,031,603,069,053
  5. Step 5: Solve for x
    x = 4,064,031,603,069,053/72,171,120.40
  6. Step 6: Final answer
    x = 56,311,050.47

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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.