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Finding the Fourth Proportional to 89,259.71, 133,569.66 and 77,293.07

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Solution

The fourth proportional to 89,259.71, 133,569.66 and 77,293.07 is: 115,662.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,259.71 : 133,569.66 = 77,293.07 : x
  2. Step 2: Convert to fraction form
    89,259.71/133,569.66 = 77,293.07/x
  3. Step 3: Cross multiply
    89,259.71x = 133,569.66 × 77,293.07
  4. Step 4: Simplify right side
    89,259.71x = 10,324,008,275.31
  5. Step 5: Solve for x
    x = 10,324,008,275.31/89,259.71
  6. Step 6: Final answer
    x = 115,662.57

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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.