Home / 105,316.30-145,336.45-57,569.83

Finding the Fourth Proportional to 105,316.30, 145,336.45 and 57,569.83

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Solution

The fourth proportional to 105,316.30, 145,336.45 and 57,569.83 is: 79,446.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,316.30 : 145,336.45 = 57,569.83 : x
  2. Step 2: Convert to fraction form
    105,316.30/145,336.45 = 57,569.83/x
  3. Step 3: Cross multiply
    105,316.30x = 145,336.45 × 57,569.83
  4. Step 4: Simplify right side
    105,316.30x = 8,366,994,719.30
  5. Step 5: Solve for x
    x = 8,366,994,719.30/105,316.30
  6. Step 6: Final answer
    x = 79,446.34

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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.