Home / 53,139.40-79,709.10-35,513.80

Finding the Fourth Proportional to 53,139.40, 79,709.10 and 35,513.80

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Solution

The fourth proportional to 53,139.40, 79,709.10 and 35,513.80 is: 53,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,139.40 : 79,709.10 = 35,513.80 : x
  2. Step 2: Convert to fraction form
    53,139.40/79,709.10 = 35,513.80/x
  3. Step 3: Cross multiply
    53,139.40x = 79,709.10 × 35,513.80
  4. Step 4: Simplify right side
    53,139.40x = 2,830,773,035.58
  5. Step 5: Solve for x
    x = 2,830,773,035.58/53,139.40
  6. Step 6: Final answer
    x = 53,270.70

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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.