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Finding the Fourth Proportional to 77,510.70, 106,991.74 and 45,677.56

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Solution

The fourth proportional to 77,510.70, 106,991.74 and 45,677.56 is: 63,050.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,510.70 : 106,991.74 = 45,677.56 : x
  2. Step 2: Convert to fraction form
    77,510.70/106,991.74 = 45,677.56/x
  3. Step 3: Cross multiply
    77,510.70x = 106,991.74 × 45,677.56
  4. Step 4: Simplify right side
    77,510.70x = 4,887,121,623.35
  5. Step 5: Solve for x
    x = 4,887,121,623.35/77,510.70
  6. Step 6: Final answer
    x = 63,050.93

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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.