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Finding the Fourth Proportional to 71,315.99, 98,422.67 and 39,484.89

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Solution

The fourth proportional to 71,315.99, 98,422.67 and 39,484.89 is: 54,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,315.99 : 98,422.67 = 39,484.89 : x
  2. Step 2: Convert to fraction form
    71,315.99/98,422.67 = 39,484.89/x
  3. Step 3: Cross multiply
    71,315.99x = 98,422.67 × 39,484.89
  4. Step 4: Simplify right side
    71,315.99x = 3,886,208,298.46
  5. Step 5: Solve for x
    x = 3,886,208,298.46/71,315.99
  6. Step 6: Final answer
    x = 54,492.80

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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.