Home / 78,523.25-108,343.77-45,812.57

Finding the Fourth Proportional to 78,523.25, 108,343.77 and 45,812.57

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Solution

The fourth proportional to 78,523.25, 108,343.77 and 45,812.57 is: 63,210.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,523.25 : 108,343.77 = 45,812.57 : x
  2. Step 2: Convert to fraction form
    78,523.25/108,343.77 = 45,812.57/x
  3. Step 3: Cross multiply
    78,523.25x = 108,343.77 × 45,812.57
  4. Step 4: Simplify right side
    78,523.25x = 4,963,506,051.22
  5. Step 5: Solve for x
    x = 4,963,506,051.22/78,523.25
  6. Step 6: Final answer
    x = 63,210.65

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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.