Home / 78,216.09-107,931.57-44,219.86

Finding the Fourth Proportional to 78,216.09, 107,931.57 and 44,219.86

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Solution

The fourth proportional to 78,216.09, 107,931.57 and 44,219.86 is: 61,019.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,216.09 : 107,931.57 = 44,219.86 : x
  2. Step 2: Convert to fraction form
    78,216.09/107,931.57 = 44,219.86/x
  3. Step 3: Cross multiply
    78,216.09x = 107,931.57 × 44,219.86
  4. Step 4: Simplify right side
    78,216.09x = 4,772,719,148.63
  5. Step 5: Solve for x
    x = 4,772,719,148.63/78,216.09
  6. Step 6: Final answer
    x = 61,019.66

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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.