Home / 81,343.17-121,855.86-56,038.22

Finding the Fourth Proportional to 81,343.17, 121,855.86 and 56,038.22

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Solution

The fourth proportional to 81,343.17, 121,855.86 and 56,038.22 is: 83,947.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,343.17 : 121,855.86 = 56,038.22 : x
  2. Step 2: Convert to fraction form
    81,343.17/121,855.86 = 56,038.22/x
  3. Step 3: Cross multiply
    81,343.17x = 121,855.86 × 56,038.22
  4. Step 4: Simplify right side
    81,343.17x = 6,828,585,338.65
  5. Step 5: Solve for x
    x = 6,828,585,338.65/81,343.17
  6. Step 6: Final answer
    x = 83,947.86

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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.