Home / 78,347.82-108,120.77-42,538.13

Finding the Fourth Proportional to 78,347.82, 108,120.77 and 42,538.13

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Solution

The fourth proportional to 78,347.82, 108,120.77 and 42,538.13 is: 58,703.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,347.82 : 108,120.77 = 42,538.13 : x
  2. Step 2: Convert to fraction form
    78,347.82/108,120.77 = 42,538.13/x
  3. Step 3: Cross multiply
    78,347.82x = 108,120.77 × 42,538.13
  4. Step 4: Simplify right side
    78,347.82x = 4,599,255,420.91
  5. Step 5: Solve for x
    x = 4,599,255,420.91/78,347.82
  6. Step 6: Final answer
    x = 58,703.04

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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.