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Finding the Fourth Proportional to 74,771,162.80, 112,156,744.20 and 40,758,938.80

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Solution

The fourth proportional to 74,771,162.80, 112,156,744.20 and 40,758,938.80 is: 61,138,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,771,162.80 : 112,156,744.20 = 40,758,938.80 : x
  2. Step 2: Convert to fraction form
    74,771,162.80/112,156,744.20 = 40,758,938.80/x
  3. Step 3: Cross multiply
    74,771,162.80x = 112,156,744.20 × 40,758,938.80
  4. Step 4: Simplify right side
    74,771,162.80x = 4,571,389,872,855,055
  5. Step 5: Solve for x
    x = 4,571,389,872,855,055/74,771,162.80
  6. Step 6: Final answer
    x = 61,138,408.20

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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.