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Finding the Fourth Proportional to 64,663.65, 97,011.63 and 51,386.85

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Solution

The fourth proportional to 64,663.65, 97,011.63 and 51,386.85 is: 77,093.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,663.65 : 97,011.63 = 51,386.85 : x
  2. Step 2: Convert to fraction form
    64,663.65/97,011.63 = 51,386.85/x
  3. Step 3: Cross multiply
    64,663.65x = 97,011.63 × 51,386.85
  4. Step 4: Simplify right side
    64,663.65x = 4,985,122,079.07
  5. Step 5: Solve for x
    x = 4,985,122,079.07/64,663.65
  6. Step 6: Final answer
    x = 77,093.11

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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.