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Finding the Fourth Proportional to 77,710.67, 107,240.55 and 43,719.17

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Solution

The fourth proportional to 77,710.67, 107,240.55 and 43,719.17 is: 60,332.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,710.67 : 107,240.55 = 43,719.17 : x
  2. Step 2: Convert to fraction form
    77,710.67/107,240.55 = 43,719.17/x
  3. Step 3: Cross multiply
    77,710.67x = 107,240.55 × 43,719.17
  4. Step 4: Simplify right side
    77,710.67x = 4,688,467,836.34
  5. Step 5: Solve for x
    x = 4,688,467,836.34/77,710.67
  6. Step 6: Final answer
    x = 60,332.36

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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.