Home / 78,742.19-108,661.09-46,487.20

Finding the Fourth Proportional to 78,742.19, 108,661.09 and 46,487.20

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Solution

The fourth proportional to 78,742.19, 108,661.09 and 46,487.20 is: 64,150.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,742.19 : 108,661.09 = 46,487.20 : x
  2. Step 2: Convert to fraction form
    78,742.19/108,661.09 = 46,487.20/x
  3. Step 3: Cross multiply
    78,742.19x = 108,661.09 × 46,487.20
  4. Step 4: Simplify right side
    78,742.19x = 5,051,349,823.05
  5. Step 5: Solve for x
    x = 5,051,349,823.05/78,742.19
  6. Step 6: Final answer
    x = 64,150.49

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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.