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Finding the Fourth Proportional to 52,510.98, 78,678.80 and 36,900.66

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Solution

The fourth proportional to 52,510.98, 78,678.80 and 36,900.66 is: 55,289.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,510.98 : 78,678.80 = 36,900.66 : x
  2. Step 2: Convert to fraction form
    52,510.98/78,678.80 = 36,900.66/x
  3. Step 3: Cross multiply
    52,510.98x = 78,678.80 × 36,900.66
  4. Step 4: Simplify right side
    52,510.98x = 2,903,299,648.01
  5. Step 5: Solve for x
    x = 2,903,299,648.01/52,510.98
  6. Step 6: Final answer
    x = 55,289.38

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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.