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Finding the Fourth Proportional to 77,010.78, 106,218.01 and 48,689.13

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Solution

The fourth proportional to 77,010.78, 106,218.01 and 48,689.13 is: 67,155.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,010.78 : 106,218.01 = 48,689.13 : x
  2. Step 2: Convert to fraction form
    77,010.78/106,218.01 = 48,689.13/x
  3. Step 3: Cross multiply
    77,010.78x = 106,218.01 × 48,689.13
  4. Step 4: Simplify right side
    77,010.78x = 5,171,662,497.23
  5. Step 5: Solve for x
    x = 5,171,662,497.23/77,010.78
  6. Step 6: Final answer
    x = 67,155.05

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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.