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Finding the Fourth Proportional to 52,040.80, 78,061.20 and 51,263.20

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Solution

The fourth proportional to 52,040.80, 78,061.20 and 51,263.20 is: 76,894.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,040.80 : 78,061.20 = 51,263.20 : x
  2. Step 2: Convert to fraction form
    52,040.80/78,061.20 = 51,263.20/x
  3. Step 3: Cross multiply
    52,040.80x = 78,061.20 × 51,263.20
  4. Step 4: Simplify right side
    52,040.80x = 4,001,666,907.84
  5. Step 5: Solve for x
    x = 4,001,666,907.84/52,040.80
  6. Step 6: Final answer
    x = 76,894.80

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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.