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Finding the Fourth Proportional to 71,061.60, 98,069.76 and 40,856.88

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Solution

The fourth proportional to 71,061.60, 98,069.76 and 40,856.88 is: 56,385.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,061.60 : 98,069.76 = 40,856.88 : x
  2. Step 2: Convert to fraction form
    71,061.60/98,069.76 = 40,856.88/x
  3. Step 3: Cross multiply
    71,061.60x = 98,069.76 × 40,856.88
  4. Step 4: Simplify right side
    71,061.60x = 4,006,824,415.95
  5. Step 5: Solve for x
    x = 4,006,824,415.95/71,061.60
  6. Step 6: Final answer
    x = 56,385.23

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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.