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Finding the Fourth Proportional to 70,477.48, 105,682.74 and 40,904.38

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Solution

The fourth proportional to 70,477.48, 105,682.74 and 40,904.38 is: 61,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,477.48 : 105,682.74 = 40,904.38 : x
  2. Step 2: Convert to fraction form
    70,477.48/105,682.74 = 40,904.38/x
  3. Step 3: Cross multiply
    70,477.48x = 105,682.74 × 40,904.38
  4. Step 4: Simplify right side
    70,477.48x = 4,322,886,956.40
  5. Step 5: Solve for x
    x = 4,322,886,956.40/70,477.48
  6. Step 6: Final answer
    x = 61,337.14

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1.5x scale

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.