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Finding the Fourth Proportional to 97,887, 135,072.60 and 57,591.90

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Solution

The fourth proportional to 97,887, 135,072.60 and 57,591.90 is: 79,470.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,887 : 135,072.60 = 57,591.90 : x
  2. Step 2: Convert to fraction form
    97,887/135,072.60 = 57,591.90/x
  3. Step 3: Cross multiply
    97,887x = 135,072.60 × 57,591.90
  4. Step 4: Simplify right side
    97,887x = 7,779,087,671.94
  5. Step 5: Solve for x
    x = 7,779,087,671.94/97,887
  6. Step 6: Final answer
    x = 79,470.08

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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.