Home / 52,288.16-78,411.48-18,990.06

Finding the Fourth Proportional to 52,288.16, 78,411.48 and 18,990.06

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Solution

The fourth proportional to 52,288.16, 78,411.48 and 18,990.06 is: 28,477.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,288.16 : 78,411.48 = 18,990.06 : x
  2. Step 2: Convert to fraction form
    52,288.16/78,411.48 = 18,990.06/x
  3. Step 3: Cross multiply
    52,288.16x = 78,411.48 × 18,990.06
  4. Step 4: Simplify right side
    52,288.16x = 1,489,038,709.89
  5. Step 5: Solve for x
    x = 1,489,038,709.89/52,288.16
  6. Step 6: Final answer
    x = 28,477.55

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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.