Home / 78,329.40-117,314.10-64,332.60

Finding the Fourth Proportional to 78,329.40, 117,314.10 and 64,332.60

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Solution

The fourth proportional to 78,329.40, 117,314.10 and 64,332.60 is: 96,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,329.40 : 117,314.10 = 64,332.60 : x
  2. Step 2: Convert to fraction form
    78,329.40/117,314.10 = 64,332.60/x
  3. Step 3: Cross multiply
    78,329.40x = 117,314.10 × 64,332.60
  4. Step 4: Simplify right side
    78,329.40x = 7,547,121,069.66
  5. Step 5: Solve for x
    x = 7,547,121,069.66/78,329.40
  6. Step 6: Final answer
    x = 96,351.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.