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Finding the Fourth Proportional to 76,312.72, 114,404.47 and 28,901.68

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Solution

The fourth proportional to 76,312.72, 114,404.47 and 28,901.68 is: 43,328.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,312.72 : 114,404.47 = 28,901.68 : x
  2. Step 2: Convert to fraction form
    76,312.72/114,404.47 = 28,901.68/x
  3. Step 3: Cross multiply
    76,312.72x = 114,404.47 × 28,901.68
  4. Step 4: Simplify right side
    76,312.72x = 3,306,481,382.51
  5. Step 5: Solve for x
    x = 3,306,481,382.51/76,312.72
  6. Step 6: Final answer
    x = 43,328.05

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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.