Home / 105,579.91-145,700.30-57,834.95

Finding the Fourth Proportional to 105,579.91, 145,700.30 and 57,834.95

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Solution

The fourth proportional to 105,579.91, 145,700.30 and 57,834.95 is: 79,812.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,579.91 : 145,700.30 = 57,834.95 : x
  2. Step 2: Convert to fraction form
    105,579.91/145,700.30 = 57,834.95/x
  3. Step 3: Cross multiply
    105,579.91x = 145,700.30 × 57,834.95
  4. Step 4: Simplify right side
    105,579.91x = 8,426,569,276.31
  5. Step 5: Solve for x
    x = 8,426,569,276.31/105,579.91
  6. Step 6: Final answer
    x = 79,812.25

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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.