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Finding the Fourth Proportional to 77,580.81, 116,422.25 and 42,545.07

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Solution

The fourth proportional to 77,580.81, 116,422.25 and 42,545.07 is: 63,845.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,580.81 : 116,422.25 = 42,545.07 : x
  2. Step 2: Convert to fraction form
    77,580.81/116,422.25 = 42,545.07/x
  3. Step 3: Cross multiply
    77,580.81x = 116,422.25 × 42,545.07
  4. Step 4: Simplify right side
    77,580.81x = 4,953,192,563.08
  5. Step 5: Solve for x
    x = 4,953,192,563.08/77,580.81
  6. Step 6: Final answer
    x = 63,845.59

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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.