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Finding the Fourth Proportional to 91,779.69, 126,669.16 and 50,953.19

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Solution

The fourth proportional to 91,779.69, 126,669.16 and 50,953.19 is: 70,322.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,779.69 : 126,669.16 = 50,953.19 : x
  2. Step 2: Convert to fraction form
    91,779.69/126,669.16 = 50,953.19/x
  3. Step 3: Cross multiply
    91,779.69x = 126,669.16 × 50,953.19
  4. Step 4: Simplify right side
    91,779.69x = 6,454,197,206.97
  5. Step 5: Solve for x
    x = 6,454,197,206.97/91,779.69
  6. Step 6: Final answer
    x = 70,322.72

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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.