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Finding the Fourth Proportional to 91,856.81, 126,752.60 and 51,575

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Solution

The fourth proportional to 91,856.81, 126,752.60 and 51,575 is: 71,168.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,856.81 : 126,752.60 = 51,575 : x
  2. Step 2: Convert to fraction form
    91,856.81/126,752.60 = 51,575/x
  3. Step 3: Cross multiply
    91,856.81x = 126,752.60 × 51,575
  4. Step 4: Simplify right side
    91,856.81x = 6,537,265,087.13
  5. Step 5: Solve for x
    x = 6,537,265,087.13/91,856.81
  6. Step 6: Final answer
    x = 71,168.00

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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.