Home / 72,171,118.40-99,589,984.80-40,807,630.40

Finding the Fourth Proportional to 72,171,118.40, 99,589,984.80 and 40,807,630.40

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Solution

The fourth proportional to 72,171,118.40, 99,589,984.80 and 40,807,630.40 is: 56,311,047.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,171,118.40 : 99,589,984.80 = 40,807,630.40 : x
  2. Step 2: Convert to fraction form
    72,171,118.40/99,589,984.80 = 40,807,630.40/x
  3. Step 3: Cross multiply
    72,171,118.40x = 99,589,984.80 × 40,807,630.40
  4. Step 4: Simplify right side
    72,171,118.40x = 4,064,031,291,260,017.50
  5. Step 5: Solve for x
    x = 4,064,031,291,260,017.50/72,171,118.40
  6. Step 6: Final answer
    x = 56,311,047.71

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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.