Home / 65,056.71-89,821.13-42,129.66

Finding the Fourth Proportional to 65,056.71, 89,821.13 and 42,129.66

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Solution

The fourth proportional to 65,056.71, 89,821.13 and 42,129.66 is: 58,166.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,056.71 : 89,821.13 = 42,129.66 : x
  2. Step 2: Convert to fraction form
    65,056.71/89,821.13 = 42,129.66/x
  3. Step 3: Cross multiply
    65,056.71x = 89,821.13 × 42,129.66
  4. Step 4: Simplify right side
    65,056.71x = 3,784,133,457.07
  5. Step 5: Solve for x
    x = 3,784,133,457.07/65,056.71
  6. Step 6: Final answer
    x = 58,166.69

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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.