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Finding the Fourth Proportional to 55,998.80, 77,291.40 and 39,256.40

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Solution

The fourth proportional to 55,998.80, 77,291.40 and 39,256.40 is: 54,182.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,998.80 : 77,291.40 = 39,256.40 : x
  2. Step 2: Convert to fraction form
    55,998.80/77,291.40 = 39,256.40/x
  3. Step 3: Cross multiply
    55,998.80x = 77,291.40 × 39,256.40
  4. Step 4: Simplify right side
    55,998.80x = 3,034,182,114.96
  5. Step 5: Solve for x
    x = 3,034,182,114.96/55,998.80
  6. Step 6: Final answer
    x = 54,182.98

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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.