Home / 105,303.92-145,319.08-57,557.24

Finding the Fourth Proportional to 105,303.92, 145,319.08 and 57,557.24

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Solution

The fourth proportional to 105,303.92, 145,319.08 and 57,557.24 is: 79,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,303.92 : 145,319.08 = 57,557.24 : x
  2. Step 2: Convert to fraction form
    105,303.92/145,319.08 = 57,557.24/x
  3. Step 3: Cross multiply
    105,303.92x = 145,319.08 × 57,557.24
  4. Step 4: Simplify right side
    105,303.92x = 8,364,165,164.14
  5. Step 5: Solve for x
    x = 8,364,165,164.14/105,303.92
  6. Step 6: Final answer
    x = 79,428.81

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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.