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Finding the Fourth Proportional to 77,642.79, 116,417.13 and 50,645.30

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Solution

The fourth proportional to 77,642.79, 116,417.13 and 50,645.30 is: 75,937.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,642.79 : 116,417.13 = 50,645.30 : x
  2. Step 2: Convert to fraction form
    77,642.79/116,417.13 = 50,645.30/x
  3. Step 3: Cross multiply
    77,642.79x = 116,417.13 × 50,645.30
  4. Step 4: Simplify right side
    77,642.79x = 5,895,979,638.68
  5. Step 5: Solve for x
    x = 5,895,979,638.68/77,642.79
  6. Step 6: Final answer
    x = 75,937.25

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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.