Home / 71,931.90-99,266.09-40,100.10

Finding the Fourth Proportional to 71,931.90, 99,266.09 and 40,100.10

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Solution

The fourth proportional to 71,931.90, 99,266.09 and 40,100.10 is: 55,338.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,931.90 : 99,266.09 = 40,100.10 : x
  2. Step 2: Convert to fraction form
    71,931.90/99,266.09 = 40,100.10/x
  3. Step 3: Cross multiply
    71,931.90x = 99,266.09 × 40,100.10
  4. Step 4: Simplify right side
    71,931.90x = 3,980,579,935.11
  5. Step 5: Solve for x
    x = 3,980,579,935.11/71,931.90
  6. Step 6: Final answer
    x = 55,338.17

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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.