Home / 105,319.59-145,341.11-57,572.95

Finding the Fourth Proportional to 105,319.59, 145,341.11 and 57,572.95

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Solution

The fourth proportional to 105,319.59, 145,341.11 and 57,572.95 is: 79,450.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,319.59 : 145,341.11 = 57,572.95 : x
  2. Step 2: Convert to fraction form
    105,319.59/145,341.11 = 57,572.95/x
  3. Step 3: Cross multiply
    105,319.59x = 145,341.11 × 57,572.95
  4. Step 4: Simplify right side
    105,319.59x = 8,367,716,758.92
  5. Step 5: Solve for x
    x = 8,367,716,758.92/105,319.59
  6. Step 6: Final answer
    x = 79,450.71

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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.