Home / 52,426.78-78,639.69-21,254.62

Finding the Fourth Proportional to 52,426.78, 78,639.69 and 21,254.62

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Solution

The fourth proportional to 52,426.78, 78,639.69 and 21,254.62 is: 31,881.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,426.78 : 78,639.69 = 21,254.62 : x
  2. Step 2: Convert to fraction form
    52,426.78/78,639.69 = 21,254.62/x
  3. Step 3: Cross multiply
    52,426.78x = 78,639.69 × 21,254.62
  4. Step 4: Simplify right side
    52,426.78x = 1,671,456,727.87
  5. Step 5: Solve for x
    x = 1,671,456,727.87/52,426.78
  6. Step 6: Final answer
    x = 31,881.74

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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.