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Finding the Fourth Proportional to 77,513.70, 106,995.90 and 45,680.58

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Solution

The fourth proportional to 77,513.70, 106,995.90 and 45,680.58 is: 63,055.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,513.70 : 106,995.90 = 45,680.58 : x
  2. Step 2: Convert to fraction form
    77,513.70/106,995.90 = 45,680.58/x
  3. Step 3: Cross multiply
    77,513.70x = 106,995.90 × 45,680.58
  4. Step 4: Simplify right side
    77,513.70x = 4,887,634,769.62
  5. Step 5: Solve for x
    x = 4,887,634,769.62/77,513.70
  6. Step 6: Final answer
    x = 63,055.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.