Home / 77,975.12-107,605.60-42,165.06

Finding the Fourth Proportional to 77,975.12, 107,605.60 and 42,165.06

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Solution

The fourth proportional to 77,975.12, 107,605.60 and 42,165.06 is: 58,187.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,975.12 : 107,605.60 = 42,165.06 : x
  2. Step 2: Convert to fraction form
    77,975.12/107,605.60 = 42,165.06/x
  3. Step 3: Cross multiply
    77,975.12x = 107,605.60 × 42,165.06
  4. Step 4: Simplify right side
    77,975.12x = 4,537,196,580.34
  5. Step 5: Solve for x
    x = 4,537,196,580.34/77,975.12
  6. Step 6: Final answer
    x = 58,187.75

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1.5x scale

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.