Home / 52,140.84-78,209.73-12,697.38

Finding the Fourth Proportional to 52,140.84, 78,209.73 and 12,697.38

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Solution

The fourth proportional to 52,140.84, 78,209.73 and 12,697.38 is: 19,045.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,140.84 : 78,209.73 = 12,697.38 : x
  2. Step 2: Convert to fraction form
    52,140.84/78,209.73 = 12,697.38/x
  3. Step 3: Cross multiply
    52,140.84x = 78,209.73 × 12,697.38
  4. Step 4: Simplify right side
    52,140.84x = 993,058,661.51
  5. Step 5: Solve for x
    x = 993,058,661.51/52,140.84
  6. Step 6: Final answer
    x = 19,045.70

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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.