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Finding the Fourth Proportional to 61,938, 85,699.62 and 53,996.76

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Solution

The fourth proportional to 61,938, 85,699.62 and 53,996.76 is: 74,711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,938 : 85,699.62 = 53,996.76 : x
  2. Step 2: Convert to fraction form
    61,938/85,699.62 = 53,996.76/x
  3. Step 3: Cross multiply
    61,938x = 85,699.62 × 53,996.76
  4. Step 4: Simplify right side
    61,938x = 4,627,501,813.23
  5. Step 5: Solve for x
    x = 4,627,501,813.23/61,938
  6. Step 6: Final answer
    x = 74,711.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.