Home / 56,776.42-78,417.12-38,839.96

Finding the Fourth Proportional to 56,776.42, 78,417.12 and 38,839.96

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Solution

The fourth proportional to 56,776.42, 78,417.12 and 38,839.96 is: 53,644.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,776.42 : 78,417.12 = 38,839.96 : x
  2. Step 2: Convert to fraction form
    56,776.42/78,417.12 = 38,839.96/x
  3. Step 3: Cross multiply
    56,776.42x = 78,417.12 × 38,839.96
  4. Step 4: Simplify right side
    56,776.42x = 3,045,717,804.12
  5. Step 5: Solve for x
    x = 3,045,717,804.12/56,776.42
  6. Step 6: Final answer
    x = 53,644.06

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1.5x scale

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.