Home / 105,541.18-145,642.45-57,793.70

Finding the Fourth Proportional to 105,541.18, 145,642.45 and 57,793.70

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Solution

The fourth proportional to 105,541.18, 145,642.45 and 57,793.70 is: 79,752.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,541.18 : 145,642.45 = 57,793.70 : x
  2. Step 2: Convert to fraction form
    105,541.18/145,642.45 = 57,793.70/x
  3. Step 3: Cross multiply
    105,541.18x = 145,642.45 × 57,793.70
  4. Step 4: Simplify right side
    105,541.18x = 8,417,215,918.08
  5. Step 5: Solve for x
    x = 8,417,215,918.08/105,541.18
  6. Step 6: Final answer
    x = 79,752.91

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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.