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Finding the Fourth Proportional to 64,763.19, 89,374.47 and 39,263.31

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Solution

The fourth proportional to 64,763.19, 89,374.47 and 39,263.31 is: 54,184.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,763.19 : 89,374.47 = 39,263.31 : x
  2. Step 2: Convert to fraction form
    64,763.19/89,374.47 = 39,263.31/x
  3. Step 3: Cross multiply
    64,763.19x = 89,374.47 × 39,263.31
  4. Step 4: Simplify right side
    64,763.19x = 3,509,137,521.70
  5. Step 5: Solve for x
    x = 3,509,137,521.70/64,763.19
  6. Step 6: Final answer
    x = 54,184.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.