Home / 91,587.99-126,328.32-64,421.70

Finding the Fourth Proportional to 91,587.99, 126,328.32 and 64,421.70

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Solution

The fourth proportional to 91,587.99, 126,328.32 and 64,421.70 is: 88,857.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,587.99 : 126,328.32 = 64,421.70 : x
  2. Step 2: Convert to fraction form
    91,587.99/126,328.32 = 64,421.70/x
  3. Step 3: Cross multiply
    91,587.99x = 126,328.32 × 64,421.70
  4. Step 4: Simplify right side
    91,587.99x = 8,138,285,132.54
  5. Step 5: Solve for x
    x = 8,138,285,132.54/91,587.99
  6. Step 6: Final answer
    x = 88,857.56

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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.