Home / 78,881.06-108,860.28-43,074.40

Finding the Fourth Proportional to 78,881.06, 108,860.28 and 43,074.40

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Solution

The fourth proportional to 78,881.06, 108,860.28 and 43,074.40 is: 59,445.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,881.06 : 108,860.28 = 43,074.40 : x
  2. Step 2: Convert to fraction form
    78,881.06/108,860.28 = 43,074.40/x
  3. Step 3: Cross multiply
    78,881.06x = 108,860.28 × 43,074.40
  4. Step 4: Simplify right side
    78,881.06x = 4,689,091,244.83
  5. Step 5: Solve for x
    x = 4,689,091,244.83/78,881.06
  6. Step 6: Final answer
    x = 59,445.08

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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.