Home / 66,126.48-91,262.90-40,979.76

Finding the Fourth Proportional to 66,126.48, 91,262.90 and 40,979.76

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Solution

The fourth proportional to 66,126.48, 91,262.90 and 40,979.76 is: 56,557.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,126.48 : 91,262.90 = 40,979.76 : x
  2. Step 2: Convert to fraction form
    66,126.48/91,262.90 = 40,979.76/x
  3. Step 3: Cross multiply
    66,126.48x = 91,262.90 × 40,979.76
  4. Step 4: Simplify right side
    66,126.48x = 3,739,931,534.01
  5. Step 5: Solve for x
    x = 3,739,931,534.01/66,126.48
  6. Step 6: Final answer
    x = 56,557.25

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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.