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Finding the Fourth Proportional to 76,491.60, 114,769.80 and 37,028.40

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Solution

The fourth proportional to 76,491.60, 114,769.80 and 37,028.40 is: 55,558.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,491.60 : 114,769.80 = 37,028.40 : x
  2. Step 2: Convert to fraction form
    76,491.60/114,769.80 = 37,028.40/x
  3. Step 3: Cross multiply
    76,491.60x = 114,769.80 × 37,028.40
  4. Step 4: Simplify right side
    76,491.60x = 4,249,742,062.32
  5. Step 5: Solve for x
    x = 4,249,742,062.32/76,491.60
  6. Step 6: Final answer
    x = 55,558.28

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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.