Home / 87,928.73-121,341.48-47,643.58

Finding the Fourth Proportional to 87,928.73, 121,341.48 and 47,643.58

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Solution

The fourth proportional to 87,928.73, 121,341.48 and 47,643.58 is: 65,748.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,928.73 : 121,341.48 = 47,643.58 : x
  2. Step 2: Convert to fraction form
    87,928.73/121,341.48 = 47,643.58/x
  3. Step 3: Cross multiply
    87,928.73x = 121,341.48 × 47,643.58
  4. Step 4: Simplify right side
    87,928.73x = 5,781,142,509.70
  5. Step 5: Solve for x
    x = 5,781,142,509.70/87,928.73
  6. Step 6: Final answer
    x = 65,748.05

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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.