Home / 85,513.12-118,041.40-76,545.11

Finding the Fourth Proportional to 85,513.12, 118,041.40 and 76,545.11

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Solution

The fourth proportional to 85,513.12, 118,041.40 and 76,545.11 is: 105,662.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,513.12 : 118,041.40 = 76,545.11 : x
  2. Step 2: Convert to fraction form
    85,513.12/118,041.40 = 76,545.11/x
  3. Step 3: Cross multiply
    85,513.12x = 118,041.40 × 76,545.11
  4. Step 4: Simplify right side
    85,513.12x = 9,035,492,338.34
  5. Step 5: Solve for x
    x = 9,035,492,338.34/85,513.12
  6. Step 6: Final answer
    x = 105,662.06

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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.