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Finding the Fourth Proportional to 91,580.68, 126,087.60 and 71,411.68

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Solution

The fourth proportional to 91,580.68, 126,087.60 and 71,411.68 is: 98,319.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,580.68 : 126,087.60 = 71,411.68 : x
  2. Step 2: Convert to fraction form
    91,580.68/126,087.60 = 71,411.68/x
  3. Step 3: Cross multiply
    91,580.68x = 126,087.60 × 71,411.68
  4. Step 4: Simplify right side
    91,580.68x = 9,004,127,343.17
  5. Step 5: Solve for x
    x = 9,004,127,343.17/91,580.68
  6. Step 6: Final answer
    x = 98,319.07

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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.