Home / 87,774.35-121,128.47-47,487.98

Finding the Fourth Proportional to 87,774.35, 121,128.47 and 47,487.98

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Solution

The fourth proportional to 87,774.35, 121,128.47 and 47,487.98 is: 65,533.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,774.35 : 121,128.47 = 47,487.98 : x
  2. Step 2: Convert to fraction form
    87,774.35/121,128.47 = 47,487.98/x
  3. Step 3: Cross multiply
    87,774.35x = 121,128.47 × 47,487.98
  4. Step 4: Simplify right side
    87,774.35x = 5,752,145,517.71
  5. Step 5: Solve for x
    x = 5,752,145,517.71/87,774.35
  6. Step 6: Final answer
    x = 65,533.33

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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.