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Finding the Fourth Proportional to 71,313.72, 98,412.93 and 39,484.68

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Solution

The fourth proportional to 71,313.72, 98,412.93 and 39,484.68 is: 54,488.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,313.72 : 98,412.93 = 39,484.68 : x
  2. Step 2: Convert to fraction form
    71,313.72/98,412.93 = 39,484.68/x
  3. Step 3: Cross multiply
    71,313.72x = 98,412.93 × 39,484.68
  4. Step 4: Simplify right side
    71,313.72x = 3,885,803,048.91
  5. Step 5: Solve for x
    x = 3,885,803,048.91/71,313.72
  6. Step 6: Final answer
    x = 54,488.86

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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.