Home / 90,421.59-124,788.08-50,139.07

Finding the Fourth Proportional to 90,421.59, 124,788.08 and 50,139.07

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Solution

The fourth proportional to 90,421.59, 124,788.08 and 50,139.07 is: 69,195.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,421.59 : 124,788.08 = 50,139.07 : x
  2. Step 2: Convert to fraction form
    90,421.59/124,788.08 = 50,139.07/x
  3. Step 3: Cross multiply
    90,421.59x = 124,788.08 × 50,139.07
  4. Step 4: Simplify right side
    90,421.59x = 6,256,758,278.29
  5. Step 5: Solve for x
    x = 6,256,758,278.29/90,421.59
  6. Step 6: Final answer
    x = 69,195.40

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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.