Home / 79,490.34-109,647.90-47,203.02

Finding the Fourth Proportional to 79,490.34, 109,647.90 and 47,203.02

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Solution

The fourth proportional to 79,490.34, 109,647.90 and 47,203.02 is: 65,111.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,490.34 : 109,647.90 = 47,203.02 : x
  2. Step 2: Convert to fraction form
    79,490.34/109,647.90 = 47,203.02/x
  3. Step 3: Cross multiply
    79,490.34x = 109,647.90 × 47,203.02
  4. Step 4: Simplify right side
    79,490.34x = 5,175,712,016.66
  5. Step 5: Solve for x
    x = 5,175,712,016.66/79,490.34
  6. Step 6: Final answer
    x = 65,111.21

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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.