Home / 78,153.08-107,851.03-42,343.16

Finding the Fourth Proportional to 78,153.08, 107,851.03 and 42,343.16

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Solution

The fourth proportional to 78,153.08, 107,851.03 and 42,343.16 is: 58,433.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,153.08 : 107,851.03 = 42,343.16 : x
  2. Step 2: Convert to fraction form
    78,153.08/107,851.03 = 42,343.16/x
  3. Step 3: Cross multiply
    78,153.08x = 107,851.03 × 42,343.16
  4. Step 4: Simplify right side
    78,153.08x = 4,566,752,774.34
  5. Step 5: Solve for x
    x = 4,566,752,774.34/78,153.08
  6. Step 6: Final answer
    x = 58,433.44

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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.