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Finding the Fourth Proportional to 73,871,999.80, 110,807,999.70 and 72,360,345.40

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Solution

The fourth proportional to 73,871,999.80, 110,807,999.70 and 72,360,345.40 is: 108,540,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,871,999.80 : 110,807,999.70 = 72,360,345.40 : x
  2. Step 2: Convert to fraction form
    73,871,999.80/110,807,999.70 = 72,360,345.40/x
  3. Step 3: Cross multiply
    73,871,999.80x = 110,807,999.70 × 72,360,345.40
  4. Step 4: Simplify right side
    73,871,999.80x = 8,018,105,131,375,097
  5. Step 5: Solve for x
    x = 8,018,105,131,375,097/73,871,999.80
  6. Step 6: Final answer
    x = 108,540,518.10

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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.