Home / 52,102.95-78,154.17-12,660.18

Finding the Fourth Proportional to 52,102.95, 78,154.17 and 12,660.18

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Solution

The fourth proportional to 52,102.95, 78,154.17 and 12,660.18 is: 18,990.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,102.95 : 78,154.17 = 12,660.18 : x
  2. Step 2: Convert to fraction form
    52,102.95/78,154.17 = 12,660.18/x
  3. Step 3: Cross multiply
    52,102.95x = 78,154.17 × 12,660.18
  4. Step 4: Simplify right side
    52,102.95x = 989,445,859.95
  5. Step 5: Solve for x
    x = 989,445,859.95/52,102.95
  6. Step 6: Final answer
    x = 18,990.21

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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.