Home / 56,271.90-77,654.58-30,778.99

Finding the Fourth Proportional to 56,271.90, 77,654.58 and 30,778.99

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Solution

The fourth proportional to 56,271.90, 77,654.58 and 30,778.99 is: 42,474.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,271.90 : 77,654.58 = 30,778.99 : x
  2. Step 2: Convert to fraction form
    56,271.90/77,654.58 = 30,778.99/x
  3. Step 3: Cross multiply
    56,271.90x = 77,654.58 × 30,778.99
  4. Step 4: Simplify right side
    56,271.90x = 2,390,129,541.27
  5. Step 5: Solve for x
    x = 2,390,129,541.27/56,271.90
  6. Step 6: Final answer
    x = 42,474.66

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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.