Home / 78,637.76-117,852.96-39,170.24

Finding the Fourth Proportional to 78,637.76, 117,852.96 and 39,170.24

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Solution

The fourth proportional to 78,637.76, 117,852.96 and 39,170.24 is: 58,703.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,637.76 : 117,852.96 = 39,170.24 : x
  2. Step 2: Convert to fraction form
    78,637.76/117,852.96 = 39,170.24/x
  3. Step 3: Cross multiply
    78,637.76x = 117,852.96 × 39,170.24
  4. Step 4: Simplify right side
    78,637.76x = 4,616,328,727.91
  5. Step 5: Solve for x
    x = 4,616,328,727.91/78,637.76
  6. Step 6: Final answer
    x = 58,703.72

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1.5x scale

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.