Home / 52,088.16-78,132-12,645.12

Finding the Fourth Proportional to 52,088.16, 78,132 and 12,645.12

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Solution

The fourth proportional to 52,088.16, 78,132 and 12,645.12 is: 18,967.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,088.16 : 78,132 = 12,645.12 : x
  2. Step 2: Convert to fraction form
    52,088.16/78,132 = 12,645.12/x
  3. Step 3: Cross multiply
    52,088.16x = 78,132 × 12,645.12
  4. Step 4: Simplify right side
    52,088.16x = 987,988,515.84
  5. Step 5: Solve for x
    x = 987,988,515.84/52,088.16
  6. Step 6: Final answer
    x = 18,967.62

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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.