Home / 77,005.79-115,227.66-45,430.97

Finding the Fourth Proportional to 77,005.79, 115,227.66 and 45,430.97

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Solution

The fourth proportional to 77,005.79, 115,227.66 and 45,430.97 is: 67,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,005.79 : 115,227.66 = 45,430.97 : x
  2. Step 2: Convert to fraction form
    77,005.79/115,227.66 = 45,430.97/x
  3. Step 3: Cross multiply
    77,005.79x = 115,227.66 × 45,430.97
  4. Step 4: Simplify right side
    77,005.79x = 5,234,903,788.49
  5. Step 5: Solve for x
    x = 5,234,903,788.49/77,005.79
  6. Step 6: Final answer
    x = 67,980.66

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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.