Home / 80,840.40-111,561.70-45,030.98

Finding the Fourth Proportional to 80,840.40, 111,561.70 and 45,030.98

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Solution

The fourth proportional to 80,840.40, 111,561.70 and 45,030.98 is: 62,143.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,840.40 : 111,561.70 = 45,030.98 : x
  2. Step 2: Convert to fraction form
    80,840.40/111,561.70 = 45,030.98/x
  3. Step 3: Cross multiply
    80,840.40x = 111,561.70 × 45,030.98
  4. Step 4: Simplify right side
    80,840.40x = 5,023,732,681.47
  5. Step 5: Solve for x
    x = 5,023,732,681.47/80,840.40
  6. Step 6: Final answer
    x = 62,143.84

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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.