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Finding the Fourth Proportional to 77,875.70, 116,871.15 and 51,571.70

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Solution

The fourth proportional to 77,875.70, 116,871.15 and 51,571.70 is: 77,395.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,875.70 : 116,871.15 = 51,571.70 : x
  2. Step 2: Convert to fraction form
    77,875.70/116,871.15 = 51,571.70/x
  3. Step 3: Cross multiply
    77,875.70x = 116,871.15 × 51,571.70
  4. Step 4: Simplify right side
    77,875.70x = 6,027,243,886.46
  5. Step 5: Solve for x
    x = 6,027,243,886.46/77,875.70
  6. Step 6: Final answer
    x = 77,395.69

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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.