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Finding the Fourth Proportional to 85,632.66, 128,461.30 and 26,472.95

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Solution

The fourth proportional to 85,632.66, 128,461.30 and 26,472.95 is: 39,713.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,632.66 : 128,461.30 = 26,472.95 : x
  2. Step 2: Convert to fraction form
    85,632.66/128,461.30 = 26,472.95/x
  3. Step 3: Cross multiply
    85,632.66x = 128,461.30 × 26,472.95
  4. Step 4: Simplify right side
    85,632.66x = 3,400,748,797.16
  5. Step 5: Solve for x
    x = 3,400,748,797.16/85,632.66
  6. Step 6: Final answer
    x = 39,713.22

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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.