Home / 87,800.51-121,135.02-57,159.57

Finding the Fourth Proportional to 87,800.51, 121,135.02 and 57,159.57

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Solution

The fourth proportional to 87,800.51, 121,135.02 and 57,159.57 is: 78,860.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,800.51 : 121,135.02 = 57,159.57 : x
  2. Step 2: Convert to fraction form
    87,800.51/121,135.02 = 57,159.57/x
  3. Step 3: Cross multiply
    87,800.51x = 121,135.02 × 57,159.57
  4. Step 4: Simplify right side
    87,800.51x = 6,924,026,055.81
  5. Step 5: Solve for x
    x = 6,924,026,055.81/87,800.51
  6. Step 6: Final answer
    x = 78,860.89

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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.