Home / 78,347.90-108,119.76-42,537.62

Finding the Fourth Proportional to 78,347.90, 108,119.76 and 42,537.62

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Solution

The fourth proportional to 78,347.90, 108,119.76 and 42,537.62 is: 58,701.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,347.90 : 108,119.76 = 42,537.62 : x
  2. Step 2: Convert to fraction form
    78,347.90/108,119.76 = 42,537.62/x
  3. Step 3: Cross multiply
    78,347.90x = 108,119.76 × 42,537.62
  4. Step 4: Simplify right side
    78,347.90x = 4,599,157,265.37
  5. Step 5: Solve for x
    x = 4,599,157,265.37/78,347.90
  6. Step 6: Final answer
    x = 58,701.73

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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.