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Finding the Fourth Proportional to 61,006.40, 91,509.60 and 43,291.70

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Solution

The fourth proportional to 61,006.40, 91,509.60 and 43,291.70 is: 64,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,006.40 : 91,509.60 = 43,291.70 : x
  2. Step 2: Convert to fraction form
    61,006.40/91,509.60 = 43,291.70/x
  3. Step 3: Cross multiply
    61,006.40x = 91,509.60 × 43,291.70
  4. Step 4: Simplify right side
    61,006.40x = 3,961,606,150.32
  5. Step 5: Solve for x
    x = 3,961,606,150.32/61,006.40
  6. Step 6: Final answer
    x = 64,937.55

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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.