Home / 98,781.60-136,318.35-53,459.67

Finding the Fourth Proportional to 98,781.60, 136,318.35 and 53,459.67

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Solution

The fourth proportional to 98,781.60, 136,318.35 and 53,459.67 is: 73,774.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,781.60 : 136,318.35 = 53,459.67 : x
  2. Step 2: Convert to fraction form
    98,781.60/136,318.35 = 53,459.67/x
  3. Step 3: Cross multiply
    98,781.60x = 136,318.35 × 53,459.67
  4. Step 4: Simplify right side
    98,781.60x = 7,287,534,005.94
  5. Step 5: Solve for x
    x = 7,287,534,005.94/98,781.60
  6. Step 6: Final answer
    x = 73,774.20

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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.