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Finding the Fourth Proportional to 91,271.68, 125,873.10 and 76,008.77

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Solution

The fourth proportional to 91,271.68, 125,873.10 and 76,008.77 is: 104,823.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,271.68 : 125,873.10 = 76,008.77 : x
  2. Step 2: Convert to fraction form
    91,271.68/125,873.10 = 76,008.77/x
  3. Step 3: Cross multiply
    91,271.68x = 125,873.10 × 76,008.77
  4. Step 4: Simplify right side
    91,271.68x = 9,567,459,507.09
  5. Step 5: Solve for x
    x = 9,567,459,507.09/91,271.68
  6. Step 6: Final answer
    x = 104,823.97

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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.