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Finding the Fourth Proportional to 81,648,002.70, 122,472,004.05 and 79,758,434.70

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Solution

The fourth proportional to 81,648,002.70, 122,472,004.05 and 79,758,434.70 is: 119,637,652.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,648,002.70 : 122,472,004.05 = 79,758,434.70 : x
  2. Step 2: Convert to fraction form
    81,648,002.70/122,472,004.05 = 79,758,434.70/x
  3. Step 3: Cross multiply
    81,648,002.70x = 122,472,004.05 × 79,758,434.70
  4. Step 4: Simplify right side
    81,648,002.70x = 9,768,175,337,600,060
  5. Step 5: Solve for x
    x = 9,768,175,337,600,060/81,648,002.70
  6. Step 6: Final answer
    x = 119,637,652.05

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.