Home / 52,038.08-78,060.32-20,869.28

Finding the Fourth Proportional to 52,038.08, 78,060.32 and 20,869.28

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Solution

The fourth proportional to 52,038.08, 78,060.32 and 20,869.28 is: 31,305.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,038.08 : 78,060.32 = 20,869.28 : x
  2. Step 2: Convert to fraction form
    52,038.08/78,060.32 = 20,869.28/x
  3. Step 3: Cross multiply
    52,038.08x = 78,060.32 × 20,869.28
  4. Step 4: Simplify right side
    52,038.08x = 1,629,062,674.97
  5. Step 5: Solve for x
    x = 1,629,062,674.97/52,038.08
  6. Step 6: Final answer
    x = 31,305.20

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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.