Home / 75,172.08-103,501.08-61,071.60

Finding the Fourth Proportional to 75,172.08, 103,501.08 and 61,071.60

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Solution

The fourth proportional to 75,172.08, 103,501.08 and 61,071.60 is: 84,086.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,172.08 : 103,501.08 = 61,071.60 : x
  2. Step 2: Convert to fraction form
    75,172.08/103,501.08 = 61,071.60/x
  3. Step 3: Cross multiply
    75,172.08x = 103,501.08 × 61,071.60
  4. Step 4: Simplify right side
    75,172.08x = 6,320,976,557.33
  5. Step 5: Solve for x
    x = 6,320,976,557.33/75,172.08
  6. Step 6: Final answer
    x = 84,086.76

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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.