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Finding the Fourth Proportional to 64,808.30, 97,212.45 and 51,686.30

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Solution

The fourth proportional to 64,808.30, 97,212.45 and 51,686.30 is: 77,529.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,808.30 : 97,212.45 = 51,686.30 : x
  2. Step 2: Convert to fraction form
    64,808.30/97,212.45 = 51,686.30/x
  3. Step 3: Cross multiply
    64,808.30x = 97,212.45 × 51,686.30
  4. Step 4: Simplify right side
    64,808.30x = 5,024,551,854.44
  5. Step 5: Solve for x
    x = 5,024,551,854.44/64,808.30
  6. Step 6: Final answer
    x = 77,529.45

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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.