Home / 87,513.99-120,733.35-64,908.60

Finding the Fourth Proportional to 87,513.99, 120,733.35 and 64,908.60

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Solution

The fourth proportional to 87,513.99, 120,733.35 and 64,908.60 is: 89,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,513.99 : 120,733.35 = 64,908.60 : x
  2. Step 2: Convert to fraction form
    87,513.99/120,733.35 = 64,908.60/x
  3. Step 3: Cross multiply
    87,513.99x = 120,733.35 × 64,908.60
  4. Step 4: Simplify right side
    87,513.99x = 7,836,632,721.81
  5. Step 5: Solve for x
    x = 7,836,632,721.81/87,513.99
  6. Step 6: Final answer
    x = 89,547.20

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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.