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Finding the Fourth Proportional to 71,156.48, 98,199.74 and 40,946.40

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Solution

The fourth proportional to 71,156.48, 98,199.74 and 40,946.40 is: 56,508.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,156.48 : 98,199.74 = 40,946.40 : x
  2. Step 2: Convert to fraction form
    71,156.48/98,199.74 = 40,946.40/x
  3. Step 3: Cross multiply
    71,156.48x = 98,199.74 × 40,946.40
  4. Step 4: Simplify right side
    71,156.48x = 4,020,925,833.94
  5. Step 5: Solve for x
    x = 4,020,925,833.94/71,156.48
  6. Step 6: Final answer
    x = 56,508.22

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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.