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Finding the Fourth Proportional to 65,715.91, 98,602.11 and 21,356.26

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Solution

The fourth proportional to 65,715.91, 98,602.11 and 21,356.26 is: 32,043.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,715.91 : 98,602.11 = 21,356.26 : x
  2. Step 2: Convert to fraction form
    65,715.91/98,602.11 = 21,356.26/x
  3. Step 3: Cross multiply
    65,715.91x = 98,602.11 × 21,356.26
  4. Step 4: Simplify right side
    65,715.91x = 2,105,772,051.20
  5. Step 5: Solve for x
    x = 2,105,772,051.20/65,715.91
  6. Step 6: Final answer
    x = 32,043.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.