Home / 105,263.82-145,264.10-56,865.76

Finding the Fourth Proportional to 105,263.82, 145,264.10 and 56,865.76

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Solution

The fourth proportional to 105,263.82, 145,264.10 and 56,865.76 is: 78,474.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,263.82 : 145,264.10 = 56,865.76 : x
  2. Step 2: Convert to fraction form
    105,263.82/145,264.10 = 56,865.76/x
  3. Step 3: Cross multiply
    105,263.82x = 145,264.10 × 56,865.76
  4. Step 4: Simplify right side
    105,263.82x = 8,260,553,447.22
  5. Step 5: Solve for x
    x = 8,260,553,447.22/105,263.82
  6. Step 6: Final answer
    x = 78,474.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.