Home / 42,135.83-58,170.80-28,726.79

Finding the Fourth Proportional to 42,135.83, 58,170.80 and 28,726.79

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Solution

The fourth proportional to 42,135.83, 58,170.80 and 28,726.79 is: 39,658.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,135.83 : 58,170.80 = 28,726.79 : x
  2. Step 2: Convert to fraction form
    42,135.83/58,170.80 = 28,726.79/x
  3. Step 3: Cross multiply
    42,135.83x = 58,170.80 × 28,726.79
  4. Step 4: Simplify right side
    42,135.83x = 1,671,059,921.24
  5. Step 5: Solve for x
    x = 1,671,059,921.24/42,135.83
  6. Step 6: Final answer
    x = 39,658.89

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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.