Home / 65,543.14-90,157.35-57,436.66

Finding the Fourth Proportional to 65,543.14, 90,157.35 and 57,436.66

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Solution

The fourth proportional to 65,543.14, 90,157.35 and 57,436.66 is: 79,006.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,543.14 : 90,157.35 = 57,436.66 : x
  2. Step 2: Convert to fraction form
    65,543.14/90,157.35 = 57,436.66/x
  3. Step 3: Cross multiply
    65,543.14x = 90,157.35 × 57,436.66
  4. Step 4: Simplify right side
    65,543.14x = 5,178,337,058.45
  5. Step 5: Solve for x
    x = 5,178,337,058.45/65,543.14
  6. Step 6: Final answer
    x = 79,006.55

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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.