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Finding the Fourth Proportional to 84,139.79, 116,113.29 and 45,900.21

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Solution

The fourth proportional to 84,139.79, 116,113.29 and 45,900.21 is: 63,342.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,139.79 : 116,113.29 = 45,900.21 : x
  2. Step 2: Convert to fraction form
    84,139.79/116,113.29 = 45,900.21/x
  3. Step 3: Cross multiply
    84,139.79x = 116,113.29 × 45,900.21
  4. Step 4: Simplify right side
    84,139.79x = 5,329,624,394.79
  5. Step 5: Solve for x
    x = 5,329,624,394.79/84,139.79
  6. Step 6: Final answer
    x = 63,342.50

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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.