Home / 85,813.13-118,398.12-67,607.33

Finding the Fourth Proportional to 85,813.13, 118,398.12 and 67,607.33

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Solution

The fourth proportional to 85,813.13, 118,398.12 and 67,607.33 is: 93,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,813.13 : 118,398.12 = 67,607.33 : x
  2. Step 2: Convert to fraction form
    85,813.13/118,398.12 = 67,607.33/x
  3. Step 3: Cross multiply
    85,813.13x = 118,398.12 × 67,607.33
  4. Step 4: Simplify right side
    85,813.13x = 8,004,581,066.21
  5. Step 5: Solve for x
    x = 8,004,581,066.21/85,813.13
  6. Step 6: Final answer
    x = 93,279.22

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1.5x scale

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.