Home / 65,719.40-98,579.10-18,973.80

Finding the Fourth Proportional to 65,719.40, 98,579.10 and 18,973.80

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Solution

The fourth proportional to 65,719.40, 98,579.10 and 18,973.80 is: 28,460.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,719.40 : 98,579.10 = 18,973.80 : x
  2. Step 2: Convert to fraction form
    65,719.40/98,579.10 = 18,973.80/x
  3. Step 3: Cross multiply
    65,719.40x = 98,579.10 × 18,973.80
  4. Step 4: Simplify right side
    65,719.40x = 1,870,420,127.58
  5. Step 5: Solve for x
    x = 1,870,420,127.58/65,719.40
  6. Step 6: Final answer
    x = 28,460.70

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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.