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Finding the Fourth Proportional to 64,987.48, 97,484.68 and 20,617.71

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Solution

The fourth proportional to 64,987.48, 97,484.68 and 20,617.71 is: 30,927.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,987.48 : 97,484.68 = 20,617.71 : x
  2. Step 2: Convert to fraction form
    64,987.48/97,484.68 = 20,617.71/x
  3. Step 3: Cross multiply
    64,987.48x = 97,484.68 × 20,617.71
  4. Step 4: Simplify right side
    64,987.48x = 2,009,910,521.89
  5. Step 5: Solve for x
    x = 2,009,910,521.89/64,987.48
  6. Step 6: Final answer
    x = 30,927.66

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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.