Home / 87,985.44-121,365.54-53,999.46

Finding the Fourth Proportional to 87,985.44, 121,365.54 and 53,999.46

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Solution

The fourth proportional to 87,985.44, 121,365.54 and 53,999.46 is: 74,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,985.44 : 121,365.54 = 53,999.46 : x
  2. Step 2: Convert to fraction form
    87,985.44/121,365.54 = 53,999.46/x
  3. Step 3: Cross multiply
    87,985.44x = 121,365.54 × 53,999.46
  4. Step 4: Simplify right side
    87,985.44x = 6,553,673,622.61
  5. Step 5: Solve for x
    x = 6,553,673,622.61/87,985.44
  6. Step 6: Final answer
    x = 74,485.89

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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.