Home / 83,871.12-125,802.60-31,276.51

Finding the Fourth Proportional to 83,871.12, 125,802.60 and 31,276.51

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Solution

The fourth proportional to 83,871.12, 125,802.60 and 31,276.51 is: 46,913.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,871.12 : 125,802.60 = 31,276.51 : x
  2. Step 2: Convert to fraction form
    83,871.12/125,802.60 = 31,276.51/x
  3. Step 3: Cross multiply
    83,871.12x = 125,802.60 × 31,276.51
  4. Step 4: Simplify right side
    83,871.12x = 3,934,666,276.93
  5. Step 5: Solve for x
    x = 3,934,666,276.93/83,871.12
  6. Step 6: Final answer
    x = 46,913.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.