Home / 66,421.40-99,632.10-59,739.80

Finding the Fourth Proportional to 66,421.40, 99,632.10 and 59,739.80

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Solution

The fourth proportional to 66,421.40, 99,632.10 and 59,739.80 is: 89,609.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,421.40 : 99,632.10 = 59,739.80 : x
  2. Step 2: Convert to fraction form
    66,421.40/99,632.10 = 59,739.80/x
  3. Step 3: Cross multiply
    66,421.40x = 99,632.10 × 59,739.80
  4. Step 4: Simplify right side
    66,421.40x = 5,952,001,727.58
  5. Step 5: Solve for x
    x = 5,952,001,727.58/66,421.40
  6. Step 6: Final answer
    x = 89,609.70

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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.