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Finding the Fourth Proportional to 76,768.86, 115,153.29 and 29,988.93

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Solution

The fourth proportional to 76,768.86, 115,153.29 and 29,988.93 is: 44,983.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,768.86 : 115,153.29 = 29,988.93 : x
  2. Step 2: Convert to fraction form
    76,768.86/115,153.29 = 29,988.93/x
  3. Step 3: Cross multiply
    76,768.86x = 115,153.29 × 29,988.93
  4. Step 4: Simplify right side
    76,768.86x = 3,453,323,953.08
  5. Step 5: Solve for x
    x = 3,453,323,953.08/76,768.86
  6. Step 6: Final answer
    x = 44,983.40

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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.