Home / 314,647.68-471,962.88-77,985.12

Finding the Fourth Proportional to 314,647.68, 471,962.88 and 77,985.12

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Solution

The fourth proportional to 314,647.68, 471,962.88 and 77,985.12 is: 116,975.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,647.68 : 471,962.88 = 77,985.12 : x
  2. Step 2: Convert to fraction form
    314,647.68/471,962.88 = 77,985.12/x
  3. Step 3: Cross multiply
    314,647.68x = 471,962.88 × 77,985.12
  4. Step 4: Simplify right side
    314,647.68x = 36,806,081,832.35
  5. Step 5: Solve for x
    x = 36,806,081,832.35/314,647.68
  6. Step 6: Final answer
    x = 116,975.54

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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.