Home / 52,088.52-78,132.20-12,645.63

Finding the Fourth Proportional to 52,088.52, 78,132.20 and 12,645.63

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Solution

The fourth proportional to 52,088.52, 78,132.20 and 12,645.63 is: 18,968.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,088.52 : 78,132.20 = 12,645.63 : x
  2. Step 2: Convert to fraction form
    52,088.52/78,132.20 = 12,645.63/x
  3. Step 3: Cross multiply
    52,088.52x = 78,132.20 × 12,645.63
  4. Step 4: Simplify right side
    52,088.52x = 988,030,892.29
  5. Step 5: Solve for x
    x = 988,030,892.29/52,088.52
  6. Step 6: Final answer
    x = 18,968.30

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1.5x scale

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.