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Finding the Fourth Proportional to 64,812.30, 97,218.45 and 51,690.30

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Solution

The fourth proportional to 64,812.30, 97,218.45 and 51,690.30 is: 77,535.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,812.30 : 97,218.45 = 51,690.30 : x
  2. Step 2: Convert to fraction form
    64,812.30/97,218.45 = 51,690.30/x
  3. Step 3: Cross multiply
    64,812.30x = 97,218.45 × 51,690.30
  4. Step 4: Simplify right side
    64,812.30x = 5,025,250,846.04
  5. Step 5: Solve for x
    x = 5,025,250,846.04/64,812.30
  6. Step 6: Final answer
    x = 77,535.45

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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.