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Finding the Fourth Proportional to 73,877.70, 110,816.55 and 65,421.30

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Solution

The fourth proportional to 73,877.70, 110,816.55 and 65,421.30 is: 98,131.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,877.70 : 110,816.55 = 65,421.30 : x
  2. Step 2: Convert to fraction form
    73,877.70/110,816.55 = 65,421.30/x
  3. Step 3: Cross multiply
    73,877.70x = 110,816.55 × 65,421.30
  4. Step 4: Simplify right side
    73,877.70x = 7,249,762,762.52
  5. Step 5: Solve for x
    x = 7,249,762,762.52/73,877.70
  6. Step 6: Final answer
    x = 98,131.95

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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.