Home / 87,774.57-121,128.60-47,488.35

Finding the Fourth Proportional to 87,774.57, 121,128.60 and 47,488.35

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Solution

The fourth proportional to 87,774.57, 121,128.60 and 47,488.35 is: 65,533.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,774.57 : 121,128.60 = 47,488.35 : x
  2. Step 2: Convert to fraction form
    87,774.57/121,128.60 = 47,488.35/x
  3. Step 3: Cross multiply
    87,774.57x = 121,128.60 × 47,488.35
  4. Step 4: Simplify right side
    87,774.57x = 5,752,197,351.81
  5. Step 5: Solve for x
    x = 5,752,197,351.81/87,774.57
  6. Step 6: Final answer
    x = 65,533.76

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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.