Home / 91,508.58-126,298.17-66,430.98

Finding the Fourth Proportional to 91,508.58, 126,298.17 and 66,430.98

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Solution

The fourth proportional to 91,508.58, 126,298.17 and 66,430.98 is: 91,686.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,508.58 : 126,298.17 = 66,430.98 : x
  2. Step 2: Convert to fraction form
    91,508.58/126,298.17 = 66,430.98/x
  3. Step 3: Cross multiply
    91,508.58x = 126,298.17 × 66,430.98
  4. Step 4: Simplify right side
    91,508.58x = 8,390,111,205.31
  5. Step 5: Solve for x
    x = 8,390,111,205.31/91,508.58
  6. Step 6: Final answer
    x = 91,686.61

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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.