Home / 56,145.60-84,218.40-38,430.90

Finding the Fourth Proportional to 56,145.60, 84,218.40 and 38,430.90

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Solution

The fourth proportional to 56,145.60, 84,218.40 and 38,430.90 is: 57,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,145.60 : 84,218.40 = 38,430.90 : x
  2. Step 2: Convert to fraction form
    56,145.60/84,218.40 = 38,430.90/x
  3. Step 3: Cross multiply
    56,145.60x = 84,218.40 × 38,430.90
  4. Step 4: Simplify right side
    56,145.60x = 3,236,588,908.56
  5. Step 5: Solve for x
    x = 3,236,588,908.56/56,145.60
  6. Step 6: Final answer
    x = 57,646.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.