Home / 105,510.76-145,606.68-57,763.36

Finding the Fourth Proportional to 105,510.76, 145,606.68 and 57,763.36

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Solution

The fourth proportional to 105,510.76, 145,606.68 and 57,763.36 is: 79,714.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,510.76 : 145,606.68 = 57,763.36 : x
  2. Step 2: Convert to fraction form
    105,510.76/145,606.68 = 57,763.36/x
  3. Step 3: Cross multiply
    105,510.76x = 145,606.68 × 57,763.36
  4. Step 4: Simplify right side
    105,510.76x = 8,410,731,075.24
  5. Step 5: Solve for x
    x = 8,410,731,075.24/105,510.76
  6. Step 6: Final answer
    x = 79,714.44

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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.