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Finding the Fourth Proportional to 82,997,881.70, 124,496,822.55 and 42,687,097.70

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Solution

The fourth proportional to 82,997,881.70, 124,496,822.55 and 42,687,097.70 is: 64,030,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,997,881.70 : 124,496,822.55 = 42,687,097.70 : x
  2. Step 2: Convert to fraction form
    82,997,881.70/124,496,822.55 = 42,687,097.70/x
  3. Step 3: Cross multiply
    82,997,881.70x = 124,496,822.55 × 42,687,097.70
  4. Step 4: Simplify right side
    82,997,881.70x = 5,314,408,027,531,413
  5. Step 5: Solve for x
    x = 5,314,408,027,531,413/82,997,881.70
  6. Step 6: Final answer
    x = 64,030,646.55

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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.