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Finding the Fourth Proportional to 73,872,000.80, 110,808,001.20 and 20,019,312.80

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Solution

The fourth proportional to 73,872,000.80, 110,808,001.20 and 20,019,312.80 is: 30,028,969.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,872,000.80 : 110,808,001.20 = 20,019,312.80 : x
  2. Step 2: Convert to fraction form
    73,872,000.80/110,808,001.20 = 20,019,312.80/x
  3. Step 3: Cross multiply
    73,872,000.80x = 110,808,001.20 × 20,019,312.80
  4. Step 4: Simplify right side
    73,872,000.80x = 2,218,300,036,765,575.50
  5. Step 5: Solve for x
    x = 2,218,300,036,765,575.50/73,872,000.80
  6. Step 6: Final answer
    x = 30,028,969.20

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1.5x scale

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.