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Finding the Fourth Proportional to 64,543.84, 89,060.04 and 40,341.94

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Solution

The fourth proportional to 64,543.84, 89,060.04 and 40,341.94 is: 55,665.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,543.84 : 89,060.04 = 40,341.94 : x
  2. Step 2: Convert to fraction form
    64,543.84/89,060.04 = 40,341.94/x
  3. Step 3: Cross multiply
    64,543.84x = 89,060.04 × 40,341.94
  4. Step 4: Simplify right side
    64,543.84x = 3,592,854,790.08
  5. Step 5: Solve for x
    x = 3,592,854,790.08/64,543.84
  6. Step 6: Final answer
    x = 55,665.34

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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.