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Finding the Fourth Proportional to 83,649.79, 115,437.54 and 45,409.63

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Solution

The fourth proportional to 83,649.79, 115,437.54 and 45,409.63 is: 62,665.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,649.79 : 115,437.54 = 45,409.63 : x
  2. Step 2: Convert to fraction form
    83,649.79/115,437.54 = 45,409.63/x
  3. Step 3: Cross multiply
    83,649.79x = 115,437.54 × 45,409.63
  4. Step 4: Simplify right side
    83,649.79x = 5,241,975,752.46
  5. Step 5: Solve for x
    x = 5,241,975,752.46/83,649.79
  6. Step 6: Final answer
    x = 62,665.74

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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.