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Finding the Fourth Proportional to 76,431.80, 114,647.70 and 37,065.80

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Solution

The fourth proportional to 76,431.80, 114,647.70 and 37,065.80 is: 55,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,431.80 : 114,647.70 = 37,065.80 : x
  2. Step 2: Convert to fraction form
    76,431.80/114,647.70 = 37,065.80/x
  3. Step 3: Cross multiply
    76,431.80x = 114,647.70 × 37,065.80
  4. Step 4: Simplify right side
    76,431.80x = 4,249,508,718.66
  5. Step 5: Solve for x
    x = 4,249,508,718.66/76,431.80
  6. Step 6: Final answer
    x = 55,598.70

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1.5x scale

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.