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Finding the Fourth Proportional to 64,878, 97,317 and 15,630

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Solution

The fourth proportional to 64,878, 97,317 and 15,630 is: 23,445

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,878 : 97,317 = 15,630 : x
  2. Step 2: Convert to fraction form
    64,878/97,317 = 15,630/x
  3. Step 3: Cross multiply
    64,878x = 97,317 × 15,630
  4. Step 4: Simplify right side
    64,878x = 1,521,064,710
  5. Step 5: Solve for x
    x = 1,521,064,710/64,878
  6. Step 6: Final answer
    x = 23,445

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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.