Home / 87,945.72-121,392.65-56,114.56

Finding the Fourth Proportional to 87,945.72, 121,392.65 and 56,114.56

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Solution

The fourth proportional to 87,945.72, 121,392.65 and 56,114.56 is: 77,455.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,945.72 : 121,392.65 = 56,114.56 : x
  2. Step 2: Convert to fraction form
    87,945.72/121,392.65 = 56,114.56/x
  3. Step 3: Cross multiply
    87,945.72x = 121,392.65 × 56,114.56
  4. Step 4: Simplify right side
    87,945.72x = 6,811,895,141.98
  5. Step 5: Solve for x
    x = 6,811,895,141.98/87,945.72
  6. Step 6: Final answer
    x = 77,455.68

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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.