Home / 78,657.32-108,453.08-64,264.10

Finding the Fourth Proportional to 78,657.32, 108,453.08 and 64,264.10

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Solution

The fourth proportional to 78,657.32, 108,453.08 and 64,264.10 is: 88,607.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,657.32 : 108,453.08 = 64,264.10 : x
  2. Step 2: Convert to fraction form
    78,657.32/108,453.08 = 64,264.10/x
  3. Step 3: Cross multiply
    78,657.32x = 108,453.08 × 64,264.10
  4. Step 4: Simplify right side
    78,657.32x = 6,969,639,578.43
  5. Step 5: Solve for x
    x = 6,969,639,578.43/78,657.32
  6. Step 6: Final answer
    x = 88,607.64

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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.