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Finding the Fourth Proportional to 54,381,350.80, 81,572,026.20 and 30,194,880.40

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Solution

The fourth proportional to 54,381,350.80, 81,572,026.20 and 30,194,880.40 is: 45,292,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,381,350.80 : 81,572,026.20 = 30,194,880.40 : x
  2. Step 2: Convert to fraction form
    54,381,350.80/81,572,026.20 = 30,194,880.40/x
  3. Step 3: Cross multiply
    54,381,350.80x = 81,572,026.20 × 30,194,880.40
  4. Step 4: Simplify right side
    54,381,350.80x = 2,463,057,575,094,666.50
  5. Step 5: Solve for x
    x = 2,463,057,575,094,666.50/54,381,350.80
  6. Step 6: Final answer
    x = 45,292,320.60

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Similar ratio
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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.