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Finding the Fourth Proportional to 74,478.32, 102,777.48 and 40,944.08

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Solution

The fourth proportional to 74,478.32, 102,777.48 and 40,944.08 is: 56,501.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,478.32 : 102,777.48 = 40,944.08 : x
  2. Step 2: Convert to fraction form
    74,478.32/102,777.48 = 40,944.08/x
  3. Step 3: Cross multiply
    74,478.32x = 102,777.48 × 40,944.08
  4. Step 4: Simplify right side
    74,478.32x = 4,208,129,363.32
  5. Step 5: Solve for x
    x = 4,208,129,363.32/74,478.32
  6. Step 6: Final answer
    x = 56,501.40

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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.