Home / 91,688.71-126,530.32-51,402.48

Finding the Fourth Proportional to 91,688.71, 126,530.32 and 51,402.48

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Solution

The fourth proportional to 91,688.71, 126,530.32 and 51,402.48 is: 70,935.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,688.71 : 126,530.32 = 51,402.48 : x
  2. Step 2: Convert to fraction form
    91,688.71/126,530.32 = 51,402.48/x
  3. Step 3: Cross multiply
    91,688.71x = 126,530.32 × 51,402.48
  4. Step 4: Simplify right side
    91,688.71x = 6,503,972,243.19
  5. Step 5: Solve for x
    x = 6,503,972,243.19/91,688.71
  6. Step 6: Final answer
    x = 70,935.37

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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.