Home / 42,170.49-58,243.10-28,718.37

Finding the Fourth Proportional to 42,170.49, 58,243.10 and 28,718.37

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Solution

The fourth proportional to 42,170.49, 58,243.10 and 28,718.37 is: 39,663.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,170.49 : 58,243.10 = 28,718.37 : x
  2. Step 2: Convert to fraction form
    42,170.49/58,243.10 = 28,718.37/x
  3. Step 3: Cross multiply
    42,170.49x = 58,243.10 × 28,718.37
  4. Step 4: Simplify right side
    42,170.49x = 1,672,646,752.16
  5. Step 5: Solve for x
    x = 1,672,646,752.16/42,170.49
  6. Step 6: Final answer
    x = 39,663.92

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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.