Home / 78,316.14-108,077.31-42,506.58

Finding the Fourth Proportional to 78,316.14, 108,077.31 and 42,506.58

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Solution

The fourth proportional to 78,316.14, 108,077.31 and 42,506.58 is: 58,659.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,316.14 : 108,077.31 = 42,506.58 : x
  2. Step 2: Convert to fraction form
    78,316.14/108,077.31 = 42,506.58/x
  3. Step 3: Cross multiply
    78,316.14x = 108,077.31 × 42,506.58
  4. Step 4: Simplify right side
    78,316.14x = 4,593,996,823.70
  5. Step 5: Solve for x
    x = 4,593,996,823.70/78,316.14
  6. Step 6: Final answer
    x = 58,659.64

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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.