Home / 105,391.52-145,439.12-57,646.24

Finding the Fourth Proportional to 105,391.52, 145,439.12 and 57,646.24

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Solution

The fourth proportional to 105,391.52, 145,439.12 and 57,646.24 is: 79,551.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,391.52 : 145,439.12 = 57,646.24 : x
  2. Step 2: Convert to fraction form
    105,391.52/145,439.12 = 57,646.24/x
  3. Step 3: Cross multiply
    105,391.52x = 145,439.12 × 57,646.24
  4. Step 4: Simplify right side
    105,391.52x = 8,384,018,416.91
  5. Step 5: Solve for x
    x = 8,384,018,416.91/105,391.52
  6. Step 6: Final answer
    x = 79,551.17

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1.5x scale

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.