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Finding the Fourth Proportional to 65,501.87, 98,271.93 and 21,127.64

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Solution

The fourth proportional to 65,501.87, 98,271.93 and 21,127.64 is: 31,697.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,501.87 : 98,271.93 = 21,127.64 : x
  2. Step 2: Convert to fraction form
    65,501.87/98,271.93 = 21,127.64/x
  3. Step 3: Cross multiply
    65,501.87x = 98,271.93 × 21,127.64
  4. Step 4: Simplify right side
    65,501.87x = 2,076,253,547.01
  5. Step 5: Solve for x
    x = 2,076,253,547.01/65,501.87
  6. Step 6: Final answer
    x = 31,697.62

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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.