Home / 87,283.96-120,457.02-65,735.70

Finding the Fourth Proportional to 87,283.96, 120,457.02 and 65,735.70

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Solution

The fourth proportional to 87,283.96, 120,457.02 and 65,735.70 is: 90,719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,283.96 : 120,457.02 = 65,735.70 : x
  2. Step 2: Convert to fraction form
    87,283.96/120,457.02 = 65,735.70/x
  3. Step 3: Cross multiply
    87,283.96x = 120,457.02 × 65,735.70
  4. Step 4: Simplify right side
    87,283.96x = 7,918,326,392.81
  5. Step 5: Solve for x
    x = 7,918,326,392.81/87,283.96
  6. Step 6: Final answer
    x = 90,719.15

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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.