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Finding the Fourth Proportional to 59,969.45, 90,009.05 and 30,407.69

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Solution

The fourth proportional to 59,969.45, 90,009.05 and 30,407.69 is: 45,639.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,969.45 : 90,009.05 = 30,407.69 : x
  2. Step 2: Convert to fraction form
    59,969.45/90,009.05 = 30,407.69/x
  3. Step 3: Cross multiply
    59,969.45x = 90,009.05 × 30,407.69
  4. Step 4: Simplify right side
    59,969.45x = 2,736,966,687.51
  5. Step 5: Solve for x
    x = 2,736,966,687.51/59,969.45
  6. Step 6: Final answer
    x = 45,639.35

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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.