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Finding the Fourth Proportional to 77,110.70, 115,666.05 and 63,988.70

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Solution

The fourth proportional to 77,110.70, 115,666.05 and 63,988.70 is: 95,983.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,110.70 : 115,666.05 = 63,988.70 : x
  2. Step 2: Convert to fraction form
    77,110.70/115,666.05 = 63,988.70/x
  3. Step 3: Cross multiply
    77,110.70x = 115,666.05 × 63,988.70
  4. Step 4: Simplify right side
    77,110.70x = 7,401,320,173.64
  5. Step 5: Solve for x
    x = 7,401,320,173.64/77,110.70
  6. Step 6: Final answer
    x = 95,983.05

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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.