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Finding the Fourth Proportional to 54,985,655.20, 82,478,482.80 and 38,777,360.80

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Solution

The fourth proportional to 54,985,655.20, 82,478,482.80 and 38,777,360.80 is: 58,166,041.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,985,655.20 : 82,478,482.80 = 38,777,360.80 : x
  2. Step 2: Convert to fraction form
    54,985,655.20/82,478,482.80 = 38,777,360.80/x
  3. Step 3: Cross multiply
    54,985,655.20x = 82,478,482.80 × 38,777,360.80
  4. Step 4: Simplify right side
    54,985,655.20x = 3,198,297,885,772,194
  5. Step 5: Solve for x
    x = 3,198,297,885,772,194/54,985,655.20
  6. Step 6: Final answer
    x = 58,166,041.20

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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.