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Finding the Fourth Proportional to 76,312.63, 105,316.74 and 42,324.22

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Solution

The fourth proportional to 76,312.63, 105,316.74 and 42,324.22 is: 58,410.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,312.63 : 105,316.74 = 42,324.22 : x
  2. Step 2: Convert to fraction form
    76,312.63/105,316.74 = 42,324.22/x
  3. Step 3: Cross multiply
    76,312.63x = 105,316.74 × 42,324.22
  4. Step 4: Simplify right side
    76,312.63x = 4,457,448,873.44
  5. Step 5: Solve for x
    x = 4,457,448,873.44/76,312.63
  6. Step 6: Final answer
    x = 58,410.37

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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.