Home / 78,837.40-118,301.58-43,774.12

Finding the Fourth Proportional to 78,837.40, 118,301.58 and 43,774.12

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Solution

The fourth proportional to 78,837.40, 118,301.58 and 43,774.12 is: 65,686.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,837.40 : 118,301.58 = 43,774.12 : x
  2. Step 2: Convert to fraction form
    78,837.40/118,301.58 = 43,774.12/x
  3. Step 3: Cross multiply
    78,837.40x = 118,301.58 × 43,774.12
  4. Step 4: Simplify right side
    78,837.40x = 5,178,547,559.11
  5. Step 5: Solve for x
    x = 5,178,547,559.11/78,837.40
  6. Step 6: Final answer
    x = 65,686.43

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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.