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Finding the Fourth Proportional to 73,980.72, 102,112.44 and 45,670.20

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Solution

The fourth proportional to 73,980.72, 102,112.44 and 45,670.20 is: 63,036.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,980.72 : 102,112.44 = 45,670.20 : x
  2. Step 2: Convert to fraction form
    73,980.72/102,112.44 = 45,670.20/x
  3. Step 3: Cross multiply
    73,980.72x = 102,112.44 × 45,670.20
  4. Step 4: Simplify right side
    73,980.72x = 4,663,495,557.29
  5. Step 5: Solve for x
    x = 4,663,495,557.29/73,980.72
  6. Step 6: Final answer
    x = 63,036.63

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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.