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Finding the Fourth Proportional to 71,492.48, 98,651.20 and 39,653.76

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Solution

The fourth proportional to 71,492.48, 98,651.20 and 39,653.76 is: 54,717.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,492.48 : 98,651.20 = 39,653.76 : x
  2. Step 2: Convert to fraction form
    71,492.48/98,651.20 = 39,653.76/x
  3. Step 3: Cross multiply
    71,492.48x = 98,651.20 × 39,653.76
  4. Step 4: Simplify right side
    71,492.48x = 3,911,891,008.51
  5. Step 5: Solve for x
    x = 3,911,891,008.51/71,492.48
  6. Step 6: Final answer
    x = 54,717.52

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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.